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About CAJUNSC/RAMBLER390
(Top Expert on this page)

Expertise
1998 and NEWER questions ONLY!! I WILL REJECT QUESTIONS FROM 1998 BACK. Electrical diagnosis. Brake Diagnosis. Driveability, Service Engine Soon Lights. Some Engine mechanical. Tires and wheels. ABS. HVAC. Air Bag (SIR). Interior, seats, etc... 6.6L Duramax Diesel diagnosis. 6.5L diesel diagnosis. I WILL not answer Alignment questions OR carburetor questions. No heavy internal transmission
I need YEAR, MAKE and MODEL of vehicle, and ENGINE SIZE and TRANSMISSION type, IF applicable to the question.
I work at a Large, Busy GM Dealership
Last thing, my answers are JUST SUGGESTIONS and ADVICE and you should ALWAYS CHECK with your mechanic for proper diagnosis and repair.

Experience
18 Years GM Dealership experience as an "A" line tech. ASE MasterTechnician. 100% GM certified MTC Certified.

Education/Credentials
High School graduate. No College or higher learning.

You are here: Experts > Home/Garden > Auto Repair > GMC Repair

Questions Answered By Expert CAJUNSC/RAMBLER390
In Category GMC Repair

Subject	Date Asked

2000 gmc K2500 6.5l starter problem	9/23/2008
Q: the starter will not active with key switch. the neutral safety switch has been bypassed and the ... A: check the security light. Is it on, blinking or on then off? If it stays on longer than bulb check ...
fan clutch noise	8/29/2008
Q: Mazda Bongo 1998 truck (Motorhome), diesel 2200lt. Originally when travelling a loud roaring fan ... A: Just using basic knowledge of fan clutch operations, it does indeed sound as if the fan clutch is on ...
electrical problem	8/29/2008
Q: I have a 6.2 diesel suburban, brand new alternator, 2 brand new batteries and they will not charge ... A: What is the rate of charge off the back of alternator? If it is proper 13.5-14.5V then you have a ...
IAH probelm 2002 GMC HD2500	8/28/2008
Q: The 540 DTC showed up again, so I will probably be replacing the Intake Air Heater relay on my 2002 ... A: I would look at possible causes for the relay burning. A small short to (-). A bad heater element. ...
milage/smog check prep	8/28/2008
Q: Good Morning, I have an 02 Sierra 1500 SLT 5.3L with 93k on the Odometer. I have a SMOG Check due ... A: Before I change plugs, I would change the fuel filter and air filter. A drop that significant in MPG ...
Cam Shaft Position Sensor	8/26/2008
Q: I own a 2002 GMC Yukon 4.8L. Took the truck to Auto Zone. Diagnostic Testing states faulty CAM shaft ... A: It is not taht hard, but it is not easy. It is located on REAR of engine, on block deck, in area ...
Reverse lights don't work	8/26/2008
Q: I have a 1999 Suburban 1500 4x4. My reverse lights are not working. I have changed the bulbs, ... A: You'll need to check and see if you have power (key on engine off) on the LIGHT GREEN wire at the ...
89 chevy 1500 front axle	8/26/2008
Q: greetings, got a 89 4x4 that wont engage, looked under and noticed passenger side axle sticking out ... A: I do not have any information on a 1989 unit, but the right axle yube will unbolt from the carrier ...
blower not working	8/25/2008
Q: I have a 2002 gmc SLE envoy and when we bought the car, the fan controls the heat and a/c blowing ... A: I would suspect the blower resistor, which is located next to the blower motor, passanger side, ...
engine noise 2005 gmc envoy	8/24/2008
Q: I am getting an increasing loud noise (whine)from my 2005 GM envoy 4.6 A mechanic suggested to ... A: It is MOST likely the Belt idler pulley, which is on the drivers side between the Alternator and A/C ...
2004 Chevy Silverado	8/24/2008
Q: I actually have 2 questions. The 1st one being how do you reprogram the key fobs on the 2004 models ... A: 1st.... Important: All transmitters which are to be recognized by the PDM must be programmed in a ...
timing/99 gmc ykon	8/23/2008
Q: I replaced the enire distibutor ( ear for cap broke off) on my 99 gmc yukon(5.7), how to you set ... A: There is no bypass. Put the enginer on TDC #1 cylinder compression stroke. Important: Rotate the ...
computer reset for 99 gmc sonoma 4.3 vortex	8/23/2008
Q: Need to know how to reset computer due to rotor button breaking replaced button but would idle but ... A: There is not way to reset PCM. My best advice is to remove dist. Put engine on TDC #1 compression ...
GMC Yukon Reverse Issue	8/23/2008
Q: 98 GMC Yukon 5.7L. Was reversing into my driveway (as ? b/4 by someone else), however, was in ... A: I would HIGHLY suspect the reaction shell. When they go, it is VERY similar to the symptoms you ...
2002 GMC SONOMA PART TIME 4X4 NO REVERSE	6/23/2008
Q: TRANSMISSION 4 SPEED AUTOMATIC. 170,000 MILES JUST GOT IT SO I DON'T KNOW MUCH BACKGROUND EXCEPT WAS ... A: Sounds like the reaction shell (sun shell) is stripped. It is an easy fixfor any tranny tech. It ...
dome light and dash indicator all 4 doors open	3/1/2008
Q: 2001 Chevy Malibu v6 3100 engine Why does dash indicator show all four doors open and dome light ... A: I would suspect possibaly the BCM (Body Control Module). BEFORE you replace this expensive part, I ...
Rear Climate Control	2/26/2008
Q: 2003 Yukon: the rear heating unit is only blowing cold air. Could this be caused by low coolant ... A: I would more likeley suspect the Mode door for the rear HVAC system. If you could take it to a shop, ...
A/C problems	2/8/2008
Q: I recently bought a 2001 GMC Z71. Air conditioner worked at all speeds. Heater never blew hot air. ... A: The blower speed is PROBABALLY the blower resistor. The temperature is PROBABALLY the temp door ...
1998 Jimmy - Heater and ABS ?'s	2/7/2008
Q: 1- Just picked up a 1998 Jimmy that needs a little love. First issue is that the heat seems to be ... A: As far as scanner, alot now do ABS and PCM. Check autozone, NAPA, etc... it will probabally depend ...
2002 5.3L (L59) FlexFuel Intake Bolt Tightening Seq.	2/6/2008
Q: I have a 2002 Tahoe with a 5.3L FlexFuel engine (VIN "Z") with a failing intake gasket. Is the ... A: Removal process same. here is the torque specs. Install new intake manifold gaskets (1) to the ...
99 gmc sierra	2/6/2008
Q: I have a 99 gmc sierra, 5.3 with a loud belt squeal. I changed the serp. belt, but still squelling. ... A: If you remove the belt and start vehicle is squeel still present? If so, it MAY be the A/C serp belt ...
Transmission problem maybe?	2/3/2008
Q: I have a 2005 GMC Yukon XL 1500 4 Wheek drive. It has 44000 miles on it and has well maintained. I ... A: If I understand correct, you have NO forward OR reverse? If this is correct, I would HIGHLY suspect ...
Tahoe Blower Motor won't stop	2/3/2008
Q: I have a 2001 Chev Tahoe 4wd 5.3 l with climate control. For the second time during cold spells ... A: I found 2 bulletins for some issues on this vehicle, but neither addresses your concern of the ...
98 Jimmy-Wiper Cowl and Braking	2/2/2008
Q: Purchased a used Jimmy this winter, costs me $300 every other week to fix things. My newest dilemma ... A: I first would not mess around with the brakes.....take it somewheres and have it PROFESSIONALLY ...
Couple Questions about my 2001 Yukon Denali	1/31/2008
Q: First of all... I wish there was a decent search feature on here so that people dont keep on ... A: First I agreee about the searching, but I would think it would be better suited for an automotive ...
05 Tahoe Blower/Resistor front	1/24/2008
Q: I have an 05 Tahoe WITHOUT 5 steps on the blower control it has a reostat type blower control, ... A: I think the parts department may have sold you the wrong part for your vehicle. The bulletin is for ...
Battery not charging	1/23/2008
Q: I have 2003 GMC Envoy XL and keep getting "battery not charging" message in display. Battery is ... A: I do not see an Aux. battery in this vehicles system or schematics. If it was installed ...
2002 Enovoy heated seat Hot Spot	1/23/2008
Q: My 2002 GMC Envoy has developed a Hot spot on the Drivers seat. Would that be a bad element, and if ... A: It does sound like a faulty heater element. They are avalible from GM I know for sure. Aftermarket, ...
98 Chev 5.0 L 305 V8 K1500 4x4 automatic	1/22/2008
Q: I want to know what effect a change in intake air temperature has upon my truck's PCM. Does ... A: Here is a breif description of the circuit description: The intake air temperature (IAT) sensor is ...
2001 GMC Jimmy PO300 code	1/22/2008
Q: I took my vehicle in because the engine light was on. The repair shop ran diagnostics on it and ... A: P0300 can be many different items. ANY fuel, ignition, or engine mechanical problems CAN cause a ...
camshaft position sensor	1/21/2008
Q: I own a 2005 GMC Envoy Xl and my code reader has stated that the camshaft position sensor is faulty. ... A: The camshaft Position sensor (CMP) Is located on the front of head, directly above the belt. Small ...
Duramax Smoking again	1/19/2008
Q: I have an 03 GMC Sierra with 6.6 Duramax. Injecters were replaced under warranty at 80k miles as ... A: LB7 engine code I would HIGHLY suspect 1 of the injectors. I have recently run into repalcing ...
front end vibration	1/19/2008
Q: I own a 2000 GMC Sierra and have been noticing that at about 40 mph I pick up a vibration in the ... A: I would have the vibration diagnosed by using an EVA (Electronic Vibration Analyzer). It will give ...
lift motor	1/13/2008
Q: is there any thing i should be concerned about changing the passenger side window lift motor in a ... A: It is pretty straight forward, only thing is when replacing motor from regulator, you'll need 4 ...
gmc service 4wd	1/13/2008
Q: i have a 03 gmc k1500hd, w/ quadrasteer. i have a service 4wd that shows on my readout. at start up ... A: I would advice you, so you dont spend anymore money on unneeded replacement of expensive parts. It ...
Installing a power steering pump 2000 Safari	1/11/2008
Q: My boyfriend needs to know how to Install a Power Steering Pump on a 2000 Chevy Safari. I do not ... A: Here is the EXACT procedure from GM SI. Remember the P/S Pulley has to be removed ON VEHICLE as the ...
2004 envoy xl, v8 slt	1/11/2008
Q: i let the car sit for a week or so in the cold and when i went to use it the battery was dead. but ... A: Here is the 30 min. learn procedure for the VTD system. I personally have never had an Envoy go into ...
Instrument Panel Light Don't Work	1/10/2008
Q: I just purchased a 2001 Pontiac Bonneville SSEi, and most of the instrument panel lights don't come ... A: Do the little lights in the door switches work (eg..for the window up/down, door lock, etc... AND ...
heater/defrost is not working	1/9/2008
Q: I have a 2000 GMC Yukon XL 1500 it has the climate control on both dash and in the roof for the back ... A: I would advice 2 items to check... 1) have him feel the heater hoses going into the dash after truck ...
1999 GMC Sierra trailer plug	1/8/2008
Q: We have a factory installed trailer plug. When we hooked up our trailer it worked good. After a ... A: I would almost be CERTIAN it is NOT a short but a faulty ground. If you use a test light and test ...
no heat out of vents	1/6/2008
Q: I just purchased a 2001 GMC Sonoma ZR2. It has the 4.3l V6 engine and automatic transmission. My ... A: There is no valve that llows coolant into the core. Hot coolant passes through it all the ...
2002 GMC Envoy	1/6/2008
Q: My vent switch (the one that changes heat / ac to floor, defrost, mix etc) makes a clicking noise ... A: The part is called the "Mode Actuator". VERY COMMON, I have one waiting for me Monday AM. I am ...
GMC Envoy	1/6/2008
Q: I have a 2002 GMC Envoy that has been a great car for the most part. Last month, as I was parking ... A: It sounds like the reaction sun shell inside the transmission has failed. It is a fairly common ...
Follow-up question to another post	1/5/2008
Q: I have a 2003 Yukon with the 5.3 and need to replace the intake gasket due to hesitating and engine ... A: After removal of manifold, Use a straight edge for this procedure...... The intake plenum should ...
Safari will not start	1/4/2008
Q: I have a 99 GMC safari 4.3. Engine cranks fine but will not start. Fuel pump is not coming on. ... A: I would FIRST see if the "security" light on dash is on. It IS possible the vehicle is in VTD Fuel ...
fan clutch runs continuesly	1/4/2008
Q: my 2000 GMC Sonoma 4 cyl plain Jane has a noisy fan, it runs constantly even when cold, this began ... A: ONLY repair for a fan clutch is replacement. here is the total GM diagnosis for the fan clutch..... ...
GMC Sierra 2002 Reverse issue	12/30/2007
Q: My GMC Sierra 2002 1500 4x4 reverse went out when backing into my driveway in 4 wheel drive. Sounds ... A: From the revving to change gears and the park noise (a metallic noise?) it then sounds VERY much ...
2004 GMC Envoy XL	12/29/2007
Q: Help...just moved across country and had my baby serviced at the GM dealer before I traveled over ... A: I think you'll be OK to drive it to service place....say as long as you drive it less than 20 miles. ...
2004 GMC Envoy XL	12/29/2007
Q: Help...just moved across country and had my baby serviced at the GM dealer before I traveled over ... A: It REALLY sounds like the belt idler pulley MAY be your problem. It is a fairly common failure. It ...
99 Yukon Heater Valve Solenoid	12/28/2007
Q: My 1999 Yukon (with 5.7L engine) heater valve solenoid allows vacuum to pass through at all ... A: .. OK I understand your question better now...( I thought you where having a prob with the valve ...
GMC Sierra 2002 Reverse issue	12/28/2007
Q: My GMC Sierra 2002 1500 4x4 reverse went out when backing into my driveway in 4 wheel drive. Sounds ... A: Is the transfer case motor moving? Can you hear it clunking? If so You probabally have an internal ...
99gmc jimmy fuel porb no start	12/28/2007
Q: filled gas tank full, drove 25 miles. car sat for about 2 hours, now wont run.<it will start,run for ... A: 60-66 all the time. It takes this pressure to for fuel to atomize when nozzle is injected ...
1999 Buick LeSabre LE	12/27/2007
Q: I had my 1999 Buick LeSabre LE, 350 V6, in the shop in April,07 because it wouldn't crank. They ... A: It sounds to me like the switch is installed improperly OR it is mis adjusted. The key cylinder may ...
2006 Yukon Denali Front Seat disassembly.	12/24/2007
Q: I have this questions specifically for the arm rest. How do I take the arm rest off of my seats? I ... A: The rear seat cushion cover needs to be rolled up and when you get close to the armrest, inside ...
hard starting after hot	12/24/2007
Q: I have a 1998 GMC 4.8 SLT 4x4 veh starts great when cold, after running for a while and I turn off ... A: A 12/98 will be a 1999 YEAR model. Anyways, it REALLY sounds like you have a fuel pump problem OR ...
gmc yukon 2003	12/23/2007
Q: My yukon has 5.3 v8 engine.It was stalling at lights,so my husband took it in and had it ... A: Intake Manifold Replacement Removal Procedure Important: The intake manifold, throttle body, fuel ...
97 GMC Sierra ABS	12/22/2007
Q: I have a 1997 GMC K1500 Sierra with the 5.7 350. About 5 months ago, i started having issues with ... A: I would advice taking it and having the ABS system scanned for codes. This will lead you to the ...
gmc yukon 2003	12/22/2007
Q: My yukon has 5.3 v8 engine.It was stalling at lights,so my husband took it in and had it ... A: I would try the library or go to local dealership and ask for pic's from SI. I cannot send pics out, ...
2002 gmc yukon	12/21/2007
Q: I have a 2002 gmc yukon with a 4.8L aoto transmission, 4dr 2wd. While driving down the road the ... A: The pump may "kick on" but is it pumping?? There is the determining factor. A GOOD mechanic will ...
2006 GMC Savanna mirror turn signals	12/19/2007
Q: How do I change the bulb in the mirrors on a GMC Savanna? A: Is it the LED type signal flasher in the mirror glass? IF So the glass will need to be replaced ...
2002 GMC Yukon Seat Heater	12/19/2007
Q: I have a 2002 GMC Yukon XL Denali w/ 6.0. The drivers seat quit working about a year ago. The ... A: First quick checks SEO fuse under hood fuse block IGN 3 fuse, drivers side fuse block if either ...
98 GMC sonoma Tranny question	12/18/2007
Q: I have a 1998 GMC sonoma 4.0 V6 5 speed. The transmission has made no sounds, or shown a fluctuation ... A: I would HIGHLY suspect either the shift fork or the shift shaft being your problem. These items are ...
Savana 2002 vortec 5700 v8 sfi engine problems	12/17/2007
Q: I bought this truck new and started having issues in the first year. The dealer claimed they could ... A: I would guess it is an oxygen sensor. ESPECIALLY if the misfires are all on one side (even or odd ...
Won't stay running	12/16/2007
Q: I got a 2002 GMC Denali XL V8. The truck was running fine until I came up state. I put about 4 or 5 ... A: My best guess would be the fuel pump. Everything you state sound just like a fuel pump. You could ...
2002 GMC Duramax 6.6l	12/15/2007
Q: I noticed alot of fuel leaking from the small drain hole between transmission and engine. I drained ... A: It is the injectors. You MAY still have warranty there is a special policy for the injectors to ...
98 s-10 2.2	12/15/2007
Q: My 98 s-10 2.2 engine temp won't go over 100 so the heater and defrost doesn't blow hot. I checked ... A: I would HIGHLY suspect the heater core. You MAY be able to reverse flow and clean it out. Feel the ...
2003 Yukon HVAC Blower not working properly	12/14/2007
Q: I have two issues: First, I have a dual climate control system and the blower on the front will ... A: The first issue is MOST likely the Front Blower Motor resistor going bad. It is located right next ...
YUKON BRAKES	12/14/2007
Q: 1998 YUKON 4X4 VORTEX V8, ABS PUMP ACTIVATES AT 7 MPH WITHOUT PUSHING THE BRAKE PEDAL. WHEN PEDAL IS ... A: Does the ABS light come on? If so I would advice having the ABS system scanned for codes. If not I ...
2002 yukonxl 4wheel drive	12/13/2007
Q: I've got a vibration problem, GM replaced drive shaft and universals, ring and pinion - still have ... A: Has the tires and wheels been checked? The BEST way to pinpoint a vibration at this point would be ...
2000 GMC Sonoma 4 cyl 2 wd	12/13/2007
Q: I unfortunately listened to the wrong people and tried towing my truck in neutral from florida to ... A: Ric I am in the process of doing my SECOND truck like this in 3 weeks. Identical, 2000 model, 2.2 ...
2000 GMC Safari Heater trouble	12/13/2007
Q: Good night, I have a 2000 GMC Safari (4,3 Vortec). This morning, the front heater never started ... A: Assuming I am correctly reading this, the Blower is inoperative? Not the heater, but the blower. IF ...
2000 GMC SIERRA 1500 6 CYLINDER	12/12/2007
Q: BRAKE FAILURE AT ONLY SPEEDS OF 5 TO 6 MPH. ABS LIGHT CAME ON FIRST TIME IT HAPPENED, DROVE IT THE ... A: Do you hear any hissing noises? If so I would suspect the booster internally failing at high vacuum. ...
2003 gmc yukon locks	12/12/2007
Q: my rear window and door locks are not working but my front door locks work. A: I have run into this NUMEROUS times. MOST times it is the left inside fuse block at fault. The lock ...
2001 Yukon heater control	12/12/2007
Q: 2001 GMC Yukon FWD 5.3L. The Heater control will not redirect air flow to floor or defroster, ... A: sounds like the Mode Door Actuator is your POSSIBLE fault. When they fail they do this same ...
engine problems	12/11/2007
Q: I have a 2000 GMC Safari 6cyl. My "Check Engine Soon" light came on and it's starting to run ... A: I would get the code read, you can do this at Autozone, and alot of other parts stores and auto ...
2001 Olds Aurora V8 CKP sensor	12/10/2007
Q: My scanner gives me a code P0386 which is either a upper or lower sensor. How can you determine ... A: P0386 is for CKP sensor B. Both sensor are located, as you say next to each other behind oil filter ...
2001 GMC JIMMY Intake manifold	12/10/2007
Q: Good evening, Thank you for your participation in this forum.In August,2007 you gave an answer to a ... A: here is the EXACT procedure from GM Service. Important: Rotate the number 1 cylinder to top dead ...
1999 GMC Electrical	12/9/2007
Q: 1999 4X4 350 Automatic GMC Suburban. I can drive down the road and all of a sudden my dashlights, ... A: Sounds like a ground problem. I would check the battery ground, and every other body ground you can ...
GMC 2002 ENVOY	12/8/2007
Q: Around two days ago, my wife's car had a light pop up stating that the engine needs to be serviced ... A: Depending on the code stored, it MAY need a PCM. There is a bulletin out for a CERTIAN code setting ...
GMC Safari ignition switch	12/7/2007
Q: How do you replace ignition switch on a 1998 GMC safari van. Could it cause the fuel pump to stop ... A: I have learned ANYTHING is possible from an ignition switch. ******FIRST disable the air bag ...
replace driver's seat 2001 Malibu	12/6/2007
Q: Can I replace the seat? My wife in not interested in a swap with the passenger seat. Thanks A: You could replace either the whole seat assembly with one from a slavage yard, or from the ...
How Do I Remove Door Panel	12/5/2007
Q: 2004 Yukon SLT, 5.3 V8. I need to replace the drivers side and the passenger side window switches. ... A: PULL UP on the panel..UP not out but UP..... Here is the procedure from GM SI, same for both sides. ...
1999GMCSubruban K2500 Exhaust	12/5/2007
Q: Suburban is 1999 K2500 Suburban with 7.4Litre engine 4WD, AC,PS,PB,AC, with 108K miles. The fuel ... A: Do you know what the codes are?? P0420 and or p0430? Those are Low effiency codes. Please let me ...
code P0650	12/4/2007
Q: I installed a Pioneer Nav UNit in my 2006 Chev Silverado 2500HD Crew Cab Duramax Pickup. Since then ... A: It sounds like it is a wiring issue. Maybe your adapter is at fault. I would double check all ...
1999 GMC Sonoma trouble	12/4/2007
Q: I have a 1999 GMC Sonoma with the 4cyl., 2.2L engine. The motor is currently misfiring. I recently ... A: The p0200 will create the p0300. One of the injecotrs OR related wiring to the injector is faulty. ...
2003 yukonxl 2500 6.0l	12/3/2007
Q: Left hand door electrical problems. left door lock not working,left mirror not working, lights for ... A: I would check the DDM fuse located in the left side panel. If fuse good, I would HIGHLY suspect the ...
2001 GMC Sierra 2500HD Diesel 6.6 Duramax Turbo	12/2/2007
Q: My ABS light has come on and after turning ignition off there seems to be a fan or pump still in ... A: It's the ABS EBCM (Electronic Brake Control Module). It has an internal relay that has tuck on, ...
2000 Tahoe Limited Door Locks	12/2/2007
Q: I have a 2000 tahoe limited with 5.7 vortec and my power locks are not working could you please help ... A: Here is the EXACT service info from GM. Please be adviced it is VERY detailed and you'll need a ...
engine won't start and vehicle shakes	12/2/2007
Q: I have a 2003 GMC Yukon XL, 70000 miles with constant problems. When we first got it the battery ... A: The A/C noise is the Compressor. It is a VERY common problem. It is caused by Low pressure liquid ...
PCV VALVE REPLACEMENT	11/30/2007
Q: CajunSC, I want to replace the PCV valve of my 2000 GMC Jimmy 4.3liter engine. Whe i try to pull ... A: It is very possible you MAY break the grommet. I have seen them break in the past. Try dabbing ...
denali transmission problem	11/30/2007
Q: I own a 2002 GMC YUKON DENALI XL. I BOUGHT IT BRAND NEW. IT HAS ONLY 36,000 ON IT. I 'M NOW ON MY ... A: does the bulider say whats failing? Is it the same part(s) failing everytime? When it fails, does it ...
Fan Air Direction	11/29/2007
Q: First of all thanks for taking the time to answer my question. I have a 1998 Buick LeSabre Limited. ... A: when there is a vaccuum leak, the HVAC system defaults to the defroster mode. I would HIGHLY suspect ...
key replacement	11/29/2007
Q: We bought a 2000 Yukon, used, and only got one set of keys. We have tried (twice)to buy a second ... A: if possible, the alarm, what does it sound like? Just the horn blowing? Or is it an aftermarket ...
2001 GMC Yukon	11/28/2007
Q: I'm having problems with the tow hitch electrical connection. My trailer lights worked once, and now ... A: In the underhood fuse box, there is a TRL L fuse. I would suspect that as being blown. The ONLY ...
Day Time Running Lights	11/27/2007
Q: My 1999 GMC Sonoma has daytime running lights and they are not on when the truck is in drive like ... A: The DRL's do not have an on/off switch. If the headlamp switch is in the OFF or AUTO position they ...
2003 GMC Envoy	11/26/2007
Q: I started to smell this hot electric smell in my 2003 GMC Envoy. In addition to that my driver side ... A: I have run into this numerous times, it is the Drivers door module has internally melted down. ...
99 GMC Savanna Conversion Van	11/25/2007
Q: After driving my van home last night, from a family gather, starting it cold there was no problem. ... A: If you do not hear the fuel pump, I would see if the relay underhood clicks while cranking. If so ...
aux battery not charging	11/25/2007
Q: i have 00 gmc 4x4 ex-cab 6.0L. the aux battery doesn't charge. the main battery is charging fine. ... A: From the generator, the charging system for the Aux. Battery goes THROUGH the starter, through a ...
GMC Fan Belt Diagram	11/24/2007
Q: I understand that you will REJECT any questions for models older than 98. I am hoping that you could ... A: I actually do not reject them, I send them to the question pool for ALL to read and help answer. I ...
Opel Corsa 1.4i utility- year 2000	11/23/2007
Q: Will a faulty knock sensor located on the crank pulley cause the coil not to fire, ie no spark on ... A: I do not have access to GM Opel service manuals. That being said, if it is a KNOCK SENSOR (KS), no ...
Headlight replacement 2005 Jimmy	11/20/2007
Q: How do I remove the light assembly to replace a burnt out headlight? I have removed two screws at ... A: Here is the EXACT procedure from GM SI. Ensure that the headlamp switch is in the OFF position. ...
Heated seat failure on 01 Buick LeSabre	11/20/2007
Q: Have 2001 Buick LeSabre. Drivers heated seat doesn't heat. Accessory fuses are fine. No loose, ... A: No the diagnostics is NOT the same. Here is the procedure. It is VERY long and fairly technical. ...
Program entry key fob	11/15/2007
Q: 1999 GMC Suburban - how do I program key fob? ANSWER: Hi Here is EXACT procedure from GM SI. If ... A: The shape of the plug is a rectangle with one flat longer than the other. The SHORT flat also has ...
Program entry key fob	11/14/2007
Q: 1999 GMC Suburban - how do I program key fob? A: Here is EXACT procedure from GM SI. If they key is in the ON position during the programming ...
My heater is on the fritz!! Help!	11/14/2007
Q: Okay, I own a 1995, 2.2 liter chevy cavalier. She's a standard and recently is have weird sounds ... A: Really sounds lik the fan blower motor. It is located under the passenger side, below the glove box. ...
2003 GMC surburban 1500 not starting	11/13/2007
Q: Started with heated seats not working. Last night Check fuse (IGN 3) no problem. Started up fine ... A: Sounds like you MAY have an electrical draw, drawing down the battery. It is VERY possible in the ...
Dome lights won't come on in 1999 GMC Jimmy	11/13/2007
Q: I have a GMC 1999 2 door SLS Blazer, 2 Wheel drive. mysteriously my dome lights, glove compartment, ... A: If the CTSY LP fuse is good, make sure it is getting hot with a test light. If so the circuits go ...
99 gmc suburban heated seats	11/12/2007
Q: Have 99 gmc suburban. Heated seats wont work. fuses are fine. What else/where else should i be ... A: Here is diagnostics.... I have no way of sending schematics, but you can click the private box, and ...
99 gmc suburban heated seats	11/11/2007
Q: Have 99 gmc suburban. Heated seats wont work. fuses are fine. What else/where else should i be ... A: It's a pretty long diagnostic procedure for inop front heated seats. If you'd like the diagnostic ...
defroster	11/11/2007
Q: 1999 GMC suburban--- defroster inop. ANSWER: front or rear???? If front, do the other blower ... A: MOST likely it is the Mode door actuator, located on the drivers side, above throttle pedal area. If ...
No injector pulse	11/10/2007
Q: 1998 Yukon 5.7, no injector pulse. Power to injectors, pulsed - OK, good spark, good fuel pressure, ... A: I would check the security system first. Make sure you do not have any codes in the BCM or the VTD ...
1998 GMC Sonoma 4-cylinder Manual won't start in cold weather	11/7/2007
Q: Every winter when the temperature gets below 20 degrees fahrenheit my truck will not start, it will ... A: I would get the fuel pressure checked.... It NEVER hurts. I would then have the PCM scanned for ...
Guages	11/7/2007
Q: I have a 2001 gmc Yukon 3/4 ton xl with a 6.0 gas motor. I can be going down the road and the gauges ... A: Chanced are you have an internal cluster fault. Replacement of cluster is ALL I know to do.Some ...
power steering	11/6/2007
Q: Previously I had Petrol with Power steering engine car recently I have purchased Diesel engine car ... A: In general there should be no difference. ALOT af variables can effect power steering preformance. ...
p0101, p0300 codes GMC savanna	11/6/2007
Q: I have a 2004 GMC savanna full size extended van with a 6.0 liter v-8 engine with mileage at 56,000. ... A: Lets get back to basics and original post. A Misfire CAN be caused by Fuel system Ignition system ...
rear locker or limited slip	11/6/2007
Q: i have a 2000 gmc 1500 5.3 4L80e and 3.73 gears. The rear is a 8.5 that is stamped on the inside. ... A: I'll first say, if your wanting to go back totally stock,. itis possible... That being said, if your ...
99 buick century rear brake lights and turn signals not working	11/2/2007
Q: I have a 99 Buick Century Custom with a 3.1 liter engine. I replaced the bulbs and this didn't fix ... A: I would STRONGLY suspect the multifunction switch, located on the stweering column. Since the CHMSL ...
electrical problems	11/1/2007
Q: I own a 2000 GMC Sierra 1500 with a 4.3 L V6 basic half ton truck. My problem is that if I park my ... A: I would HIGHLY suspect the Coil wire. I have run into the NUMEROUS times. Quick fix would be to ...
1998 GMC Sierra 1500 1/2 ton	10/31/2007
Q: My 1998 GMC Truck 1500 Fuse number 3 (courtesy) is not working right. When i put it in the door ... A: It sounds like a light is either still on somewheres, or the headlamp switch MAY be at fault, OR you ...
Reprogram auto door locks 99 GMC Yukon	10/30/2007
Q: I just purchased a 99 GMC Yukon LS with 70K mi 5.7L engine, old body style. I received only one key ... A: I've got to attemp to find an Owners Manual for this vehicle. I could not find anything in GM ...
electrical	10/30/2007
Q: 99 olds lss 3.8- When I turn on the rear defroster it kills the engine, driver side power seat, ... A: The bus bar is the under hood fuse box. I would check battery voltage AND alternator output with the ...
buzzing noise at under 10 mph from start up	10/30/2007
Q: i just got a 2004 silverado 2500hd 4x4 6l. vortex, my wife notice a litte buzzing noise when start ... A: I would HIGHLY suspect the exhaust system, in particular the "clamps" or "Straps" that hold the heat ...
98 GMC will not start	10/29/2007
Q: I have a 98 GMC 5.7 that will not start. This is the third time this has happened. the first two ... A: First starting fuid is not a good idea. It can explode and cause catostrophic damage. I would get ...
transfer case?	10/28/2007
Q: i have a 1999 gmc sierra 1500 5.3L, 4-whl drive,z71.i don't use the 4-whl drive.it has 123,000 ... A: As far as the clunk/jerking, I would, WITHOUT actually seeing and feeling vehicle, tell you that ...
2001 GMC Yukon	10/27/2007
Q: Can't turn the ignition, but steering wheel turns. I saw your answer to a similar question ... A: If your going to have it towed somewhers, I would tow it to the dealership OR to a good reputable ...
2002 tracker	10/27/2007
Q: I own a 2002 Chevy Tracker. Recently, the service engine soon light came on. I had a diagnostic ... A: OBD2 engine systems CANNOT have the service engine soon light by disconnecting the battery. They ...
power locks	10/27/2007
Q: The front driver and passenger power door locks on my 2000 Yukon Denali 5.7L only move about half ... A: It is MOST likely the Actuators for the misoperating doors. This is how these particular actuators ...
2001 GMC Sierra SLT Z71	10/26/2007
Q: The power seat on the driver side is not working. The Power lumbar control adjacent to the controls ... A: The seat is PROBABALLY the adjuster assy, as the motors are not replaceable, well their not avalible ...
water drainage	10/26/2007
Q: I have a 2006 sierra crew cab. No problems in a year and a half until the last couple of months. It ... A: Have you been using your A/C? It COULD be A/C drain off not draining properly. The drain MAY be ...
2001 Yukon XL Dash Gauge Issues	10/25/2007
Q: Recently when the Yukon has been sitting overnight the fuel, RPM, speedometer gauges along with the ... A: It REALLY sounds like you may have an internal cluster problem. I would, though, recommend taking it ...
2005 GMC Envoy Antifreeze smell	10/25/2007
Q: I have been experiencing a slight smell of antifreeze while driving. Thinking Heater Core. I ... A: I would recommend having the cooling system pressure tested. Have the leak identified FOR SURE, ...
Rt Turn signals ano working	10/24/2007
Q: The blinker on the inside is flashing like it should(not fast). I do have a after market plug i that ... A: Check the large 4 way junction block, under the left side rear, where the 4 wire harnesses meet. ...
turn signal	10/23/2007
Q: ..I own a chevy cavalier. Recently the turn signals are intermittent. I put either the left or right ... A: Not knowing the year kinda puts me at a disadvantage, but I would check ALL bulbs, front and rear. ...
2000 gmc jimmy no power when cold	10/23/2007
Q: I have a vortec 4.3. when cold, car has no power for about the first 15 seconds of trying to drive. ... A: If it feels like it is not getting fuel, I would install a fuel pressure gauge onto the fuel system ...
2000 GMC Yukon XL	10/23/2007
Q: My Yukon XL's passenger side AC vents are blowing hot air. A: Sounds like the Passanger side tempeture door actuator is faulty. You CAN take it to a good repair ...
99 Gmc Jimmy SLT 4.3 V6 - Instrument Panel Lights & Crank, No Start	10/22/2007
Q: I also have a 1999 Gmc Jimmy SLT with a weird indicator light/no start condition, very similar to ... A: I would check the Alternator output with a meter. SHOULD be 13-15vdc output. Thats first. I would ...
heater core replacement	10/22/2007
Q: How hard is a replacement on 98 Gmc sierra?I have to replace the water pump and the heater core ... A: It's easy for me..... but I've done 60 or so of them. The bottom panel needs to be taken off. There ...
replacing speakers or adding speakers 2001 gmc jimmy	10/21/2007
Q: How do you replace speakers in front door panel and rear panel in 2-door model. We managed to hook ... A: Here is procedure Remove the upper and lower front seat anchor bolts. Remove the rear seat belt ...
replacing speakers or adding speakers 2001 gmc jimmy	10/20/2007
Q: How do you replace speakers in front door panel and rear panel in 2-door model. We managed to hook ... A: Here is EXACT procedure for removing door panel... You'll need a specialty tool, a Trim Pad and ...
water pump replacement	10/20/2007
Q: 1994 gmc 6.5 turbo k2500 when i took off my water pump for replacement. i discover that there wasn't ... A: Yes special sealant Here is the number and procedure..... Apply anaerobic sealer GM P/N 1052357, ...
starting	10/19/2007
Q: on a 2003 chevy malibu with a 3.1 automatic tranny. i bought it for cheap because the fool broke the ... A: Both need to be done. I would put the interlock in first, mount your ignition switch, then the ...
best way(if any) to unbend a tailgate	10/19/2007
Q: i have a 1996 GMC sierra 2500 regular cab with the 8 foot bed. it used to be a work truck so the ... A: If the rods inside the gate are NOT bent You can attempt to bend them to suit your particular ...
fuel sender	10/18/2007
Q: I have a 2000 chevy silverado 2500 series 4wd pickup that has has become hard starting over the past ... A: Yes sounds like it. I would check with the repair shop, and see if it is still under warranty. It ...
98 Lesabre Limited Blower Motor Not Working	10/18/2007
Q: Back on April 1st of this year you diagnosed a similar problem for someone. The problem is the ... A: The blower motor resistor connector C1 terminal B and ground should be 12v. Between C1 term. B and C ...
Replacing Stereo speakers	10/17/2007
Q: I've managed to replace the deck but I can't quite figure out how to pull off the door panels to get ... A: remove 2 screws (one is behind the door lock slide). other is below the pull handle. remove the ...
2004 Yukon body computer issues?	10/16/2007
Q: Driver's side (only) ventilation on my 2004 Yukon XL Denali with 70K miles shifts over to very hot ... A: I think you have 2 seperate issues. 1) The fuel level is PROBABALLY the Fuel level sensor, located ...
Denali High Idle	10/16/2007
Q: I have a 2002 Yukon Denali that idles high when the air conditioning is initially turned on. After ... A: I would recommend taking it to EITHER your local GM dealership OR to a shop that has reprogramming ...
drivers window	10/15/2007
Q: can you advise what is commonly at fault if my 98 tahoe drivers window stopped working and i changed ... A: If the fuse AND circuit breaker are good, I would check for power getting to the motor. This will ...
starting problem	10/14/2007
Q: I have a 2000 Chevy C3500 dually. It has a 7.4 with an auto trans. (4L80E) Over the last few months ... A: I would look at the fuel pressure regulator. Make sure there is NO fuel in the vacuum side of the ...
air conditioner	10/13/2007
Q: on a 2005 malibu classic im having trouble with the ac. while your driving it will be blowing good ... A: I would first take it and have the refrigerant charge checked FIRST. Most shops offer a free or ...
98 GMC backfire/misfire 5.7	10/12/2007
Q: I'm somewhat mech inclined. I have a 5.7L GMC K1500 and at low speeds it backfire's. I'm thinking it ... A: I would recommend a major tune up )Plugs, wires, cap, rotor, fuel filter, air filter, throttle body ...
Oil pressure	10/11/2007
Q: have a GMC Vandura 2500. 350 5.7 Liter. I have noticed that the oil pressure is around 20. It is ... A: It is VERY difficult to diagnose noises not having vehicle here. I would tell you to go with your ...
Oil pressure	10/10/2007
Q: have a GMC Vandura 2500. 350 5.7 Liter. I have noticed that the oil pressure is around 20. It is ... A: not knowing the exac year, it is VERY likely either the gage or the wiring from sending unit to the ...
GMC 98 Jimmy SLT 4.3 electrical	10/10/2007
Q: My Jimmy has a problem with the headlights coming on after the vehical has been turned off and the ... A: I would have to say, with key off and OUT of ignition and lights STILL illuminate, would MOST ...
p0101, p0300 codes GMC savanna	10/10/2007
Q: I have a 2004 GMC savanna full size extended van with a 6.0 liter v-8 engine with mileage at 56,000. ... A: It REALLY sounds like you MAY possabally have a bad injector on the #4 cylinder. The p0304 would ...
Crankshaft Position Sensors	10/9/2007
Q: I have a 2001 Oldsmobile Aurora with the 4.0 V8. I need to replace both of my Crankshaft Position ... A: here is the exact procedure from GM service Raise and support the vehicle. Remove the oil filter ...
1996 gmc yukon	10/9/2007
Q: how do i replace drivers side head light...Do I take off the grill to replace whole unit? A: No the whple grille does not need to be removed. Remove the 2 long screws from the top of the ...
no heat	10/8/2007
Q: I recently purchased a 97 gmc sierra k3500 w/ a 6.5 L turbo-diesel. After a few days running it in ... A: I would check the basics first, proper coolant level, etc... There is a possibality the 'stat(s) ...
98 tahoe 5.7l	10/6/2007
Q: simple question, when key is on, engine is off i do not hear fuel pump.......but for the last few ... A: It COULD be the relay, but they REALLY rarely are at fault. You can under hood, take off the fuse ...
brakes	10/6/2007
Q: I have 1999 yukon my rear brakes are locking up all the brakes have been replaces all brakes ... A: Have them check the proportioning valve. Check the rubber line from steel line to break off block ...
ABS relay	10/5/2007
Q: I have a 2001 gmc jimmy and need to locate the ABS relay. I believe it is under the dash, am I ... A: After searching the entire service manual, I have come up with the ABS relay is PART of the EBCM ...
1999 Sananna van 5.7 vortex	10/4/2007
Q: Van will only start with a shot of stating fluid. Did a complete tune up minus fuel filter. Runs ... A: REALLY sounds like fuel pump issue. You should have the pressure checked (60-66 psi NO MORE NO LESS) ...
2000 GMC Jimmy power seat failure	10/4/2007
Q: I have a 2000 GMC Jimmy SLE the driver's side power seat quit working, I've tested the switch and it ... A: If your getting power on the orange wire at the switch, the circuit breaker is good. If the switch ...
97 Chevy Cav removing wheel studs	10/4/2007
Q: Working on a wifes Cavalier. The mechanic did not tighten the lugnuts after repairs. Wife ... A: The PROPER way to do it is to remove the whol;e hub assy (large nut, all brake hdwe, etc...) It CAN ...
1995 GMC 1/2 ton 4 wheel drive truck brakes	10/3/2007
Q: 1995 GMC 4 wheel drive 350cu,5 speed manual transmission.When I drive my truck for a distance and ... A: It MAY be the Master cylinder. It MAY also be the proportioning valve. I would check the valve ...
2000 grand am	10/3/2007
Q: i have a 2000 grand am with a 2.4 motor. like many other people my car sometimes will not start it ... A: If you've replaced the switch, sensor AND key cylinder, then I would look to the BCM at possible ...
Ukon xl 2002	10/2/2007
Q: Would you direct me to a web site that can show me step by step on how to fix an electric Window? I ... A: I'll send you the GM procedure, less pics and hyperlinks. You CAN now get just the regulator, ...
vents	9/30/2007
Q: I have a 1999 gmc safari van with a 4.3 and it is 2 rwd. I have recently replaced the radio in it ... A: It sounds like you have a vacuum leak. The vacuum line runs from the hvac controller across the ...
99 GMC Yukon door panel removal	9/30/2007
Q: I need to replace my stereo speakers and can not figure out how to remove the front door panels to ... A: Disconnect the negative battery cable. Remove the door handle bezel. Remove the window regulator ...
engine problem	9/28/2007
Q: I have GMC 3500 turbo disel 2000Y and few days ago i started to hear strange sound and noise from my ... A: I would have them first check for air leaks. If it has a high revving sound while driving, I would ...
My Envoy sounds like it is pinging..	9/28/2007
Q: I have a 2003 Envoy SLT (68,000 miles) and I have noticed that it sounds like it is pinging. I ... A: If it is pinging while driving, more specifcally under heavy acceleration or load, It is most likely ...
oil pressure	9/27/2007
Q: i have a 97 chevy silverado extended cab with a vortec 350 and a automatic tranmission. the oil ... A: The gage itself MAY be the problem. The Engine oil pressure sender MAY also be the problem. I would ...
2001 chevrolet malibu electrical problems	9/26/2007
Q: I have a 2001 Chevrolet Malibu which the gas gauge, temperature gauge, radio, and defroster go out ... A: I would not suspect a short, I would suspect either an Intermittently open circuit or a bad ground ...
2001 gmc envoy brake lights	9/25/2007
Q: I have notice that the brake lights does not come on when brake is applied but there is taillights ... A: I would double check and see if power is getting to the STOPLP fuse. If so check the CHMSL relay ...
2005 GMC Envoy	9/24/2007
Q: I have a 2005 GMC Envoy and recently it started to have a hum when started and gets a little louder ... A: If it is coming from the front of the engine it is PROBABALLY either the idler pulley (VERY COMMON) ...
99 GMC, 4WD, 5.3 L	9/24/2007
Q: The truck has an intermittent problem with the security, batter and low fuel light flashing, the ... A: I would recommend first taking it to a shop your familiar with that offers a free computer ...
2002 yukon denali transfer case	9/23/2007
Q: A friend bought this vehicle, but, unbeknown to him, it was in hurricane Katrina.[WET!] What he ... A: My best advice would be to check with your local GM dealership and see if they'll print you out the ...
load noise when accelerating with a/c on	9/23/2007
Q: I have a 2003 yukon. I get a very load noise and vibration from my compressor belt tensioner when I ... A: This condition may be caused by liquid slugging of the A/C compressor. This condition may cause an ...
2003 GMC Sierra	9/23/2007
Q: My Sierra has memory power seats. The drivers seat would go back and then not go forward. Then after ... A: The switch is an input to the DMSM (Drivers Memory seat module) or sometimes listed as the MSM ...
heater core replacement	9/22/2007
Q: I have A 2000 gmc jimmy with 4.3 engine the heater core is bad what I need to know is how to get to ... A: It is a HUGE job. If you do not have decent mechanical ability, I would NOT recommend a do it ...
1998 GMC Suburban	9/22/2007
Q: After repairing the fuel pump on my suburban, I cannot get the fuel pump back into the gas tank? I ... A: Do you have the tank all the way removed? If not remove it all the way. You'll be able to push the ...
2001 Chevy Tahoe	9/21/2007
Q: My 01 Tahoe 5.3 v8 auto 4x4 has 164000 miles. It has had all normal rutine maintance from day one. ... A: There is two things you can do. Reclean the throttle bore with GM Top Engine Cleaner spray. Then ...
GMC Truck Fuel Pump Failure	9/21/2007
Q: I own a 2000 GMC CrewCab 4x4, with 5.7 engine. At the first of this year I started experiencing ... A: I would put a fuel pressure gage on it and MAKE sure it IS the pump. If you are having multiple Fuel ...
GMC Envoy Geer Release Trouble	9/20/2007
Q: ...I have a 2002 GMC Envoy V6. A couple of months ago my husband replaced my brakes. Everything ... A: The BTSI is a part of the entire gear shifter assembly. Price range.... I would just be guessing. ...
1994 gmc 1500 pickup (350 CID)	9/19/2007
Q: when I first start my 1994 GMC and when I cut it off, there is a loud, fast knocking for 25 seconds ... A: It is the HVAC recirculation door actuator. It is a common item to make noise. It is located on the ...
GMC Envoy Geer Release Trouble	9/19/2007
Q: ...I have a 2002 GMC Envoy V6. A couple of months ago my husband replaced my brakes. Everything ... A: I really doubt the brakes had anything to do with it. Just a coincedence. Most probabally the fault ...
2003 GMC Yukon xl 2500 Loss of power and knock off	9/18/2007
Q: I have a 2003 Yukon XL 2500 with 8.1L engine. I experience a loss of power and occassional knock ... A: I would have fuel pressure tested. Have the shop drive it with pressure gage attached. If pressure ...
front wheel play - '99 4wd suburban	9/17/2007
Q: 7L 138K I've noticed play in the right front wheel. Can move camber about 1/4". This is the wheel ... A: Being a 4wd, the hub/bearing are one single unit. It will be repalced as one unit. Bearing is not ...
1997 Yukon	9/17/2007
Q: It started with the passenger window failing to open/close. Now, the power locks will lock but not ... A: I would remove the door panel and see if the Lock Actuator has not broken or the mounting rivets ...
GMC Safari engine misfire	9/16/2007
Q: I have question about engine misfire at 99 GMC Safari,V6 2WD,4.3L. I got check engine light ... A: The light blinks because it is Damaging the catalyst (Catalytic Converter). If the mechanic could ...
A/C PRESSURE CHECK AND FILLING	9/15/2007
Q: I HAVE A 2004 GMC 2500HD SIERRA. I HAVE A R-134 REFILL KIT, BUT I CAN'T SEEM TO FIND THE FILL PORT ... A: The one CLOSER to the firewall is the low side. It is smaller diameter fitting than the high side. ...
fuel pump/gage	9/15/2007
Q: I have noticed when a idle, my gas gage will 'jump', this has been happening for about 4 months. ... A: It sounds like you MAY have a fuel pump issue. Before spending $$$$$$$$$$$ on the parts, I would ...
GMC Sonoma Fuel pump repair costs	9/14/2007
Q: I just got my 2001 Sonoma 6 cylinder engine fuel pump repaired, he diagnosed it by sticking his ... A: ALOT of varibles, but if the price you gave me was for the WHOLE job (Parts and labor), I would say ...
98 Sonoma 4wd blowing ATC fuse	9/14/2007
Q: have a 98 Sonoma 4wd 6 cyl vortec engine with push button 4wd switch. I keep blowing the ATC fuse ... A: It REALLY depends on which Transfer case you have (RPO code NP1 [2 speed selectable]) or (RPO code ...
Harsh 1 to 2 upshifts	9/14/2007
Q: Could you please sent me the latest program # dealing with intermittent harsh 1 to 2 upshifts in my ... A: Here is a list of ALL the newest calibrations for your truck 9379910 - Operating systems 9358570 - ...
Yukon headlights too dim	9/13/2007
Q: I have a 1999 GMC Yukon (old body style 5.7L). I bought it new. Lately I have noticed that the low ... A: The voltage is not changed. Here is the EXACT GM service manual circuit description for the ...
98 gmc jimmy fuel problem?	9/12/2007
Q: i have a 98 gmc jimmy with a 4.3l today it started to act up, rpm were up and down, it would buck ... A: I would recommend a tune up, plugs, plug wires, dist, cap, rotor, air filter. If still acting up, I ...
Dome light `door switch	9/12/2007
Q: I have a 2001 GMC 2500 Sierra with a problem with the dome light not coming on with the Passenger ... A: The switch is actually part of the latch assembly, which is the part in the door. I have replaced a ...
Misfire at Idle	9/11/2007
Q: We own a 1999 Chevrolet Suburban with 193K miles. Over the last month, it has been idling very ... A: Sounds like you done your homework... From what you are telling me, I would also concur based on the ...
01 Buick Regal LS	9/11/2007
Q: I have a 2001 Buick Regal LS, 3800 series engine. The transaxle is not shifting properly. when it i ... A: I would take the vehicle to a repair shop that offers free diagnostic scans. I would get the PCM ...
backup lights	9/10/2007
Q: OK the backup lights in my 2002 GMC sonoma flicker but mostly do not work. I checked the fuses they ... A: I would check the reverse lamp switch, located in the side of the tranny. It is a small switch with ...
2001 GMC problems.	9/9/2007
Q: I've had this very strange problem with my 2001 GMC Jimmy 4WD. It has the 4.3L Vortec with the csefi ... A: The fuel pump is your problem. This system HAS GOT to produce 60-66 psi to pop off the nozzles. The ...
Rear A/C	9/9/2007
Q: The rear A/C to my 2001 GMC Yukon Denali (Vortec 6.0L)has stopped blowing cool air. It only blows ... A: First Low A/C system freon charge CAN cause this problem. Next- The Rear HVAC controller is ...
2003 yukon-idle	9/8/2007
Q: 2003 Yukon 5.3. runs great on highway, anytime we stop at stop sign, it wants to die. idles up and ... A: The throttle bore needs to be cleaned. GM makes a product recommended called "Top Engine Cleaner" ...
1999 gmc envoy day time lights	9/8/2007
Q: I have a 1999 Gmc envoy and the daytime running lamp on the passenger side has stopped working all ... A: I have only had 1 dealing with this system and as much as I hate to say, The GM light is the only ...
motor swap	9/6/2007
Q: Is it possible to put a 350 in place of a 305 without changing my intake and computer on the truck? ... A: If it's a VIN M motor (305) to a VIN R motor (350), they will swap EXCEPT the PCM MAY need to be ...
Harsh 1 to 2 upshift	9/5/2007
Q: I own since new a 1999 Chevy Silverado 1/2 ton SWB 4x4 with a 5.3L V8 and O.D. automatic. Trans is ... A: Although I am not a great transmission tech, I will assist some I hope! First thing to check, unless ...
Intrument Cluster is not working	9/5/2007
Q: The guages in my instrument cluster in my 2001 Suburban started to flip on and off and several ... A: It is PROBABALLY the cluster at fault. You could take it to a repair shop and see if there is any ...
Noise when accelerating	9/5/2007
Q: I have a 1998 GMC 3500 series box van. The van has a 350 and an automatic transmission. My ... A: I wish I could hear the noise. Does the truck actually vibrate? Can you feel a vibration like in ...
2001 GMC Yukon	9/4/2007
Q: 2001 Yukon 2wd 5.3 engine Last 9 digits in VIN 31J189915 Engine started missing a little bit. ... A: 2 things to check first is PROBABALLY it. The fuel pressure regulator is PROBABALLY leaking into the ...
2004 2500 Sierra	9/4/2007
Q: 2 Part issue Issue: Front A/C was pulsing - meaning blowing hard then soft. Action: I pulled the ... A: Check the harness that runs down between the glove box door frame and the black HVAC case. You can ...
01 Chevy Express 5.7L V8	9/4/2007
Q: I need some help finding what I think is a vacuum leak that I probably created while fixing ... A: I cannot think of anything either that could cause a hissing sound. Spraying carb cleaner is OK, the ...
99 gmc safari heating/ac controls	9/3/2007
Q: My 99 gmc safari awd temperature control seems to be malfunctioning. Whenever I go uphill or put a ... A: I would get the Vacuum system checked. The system uses vacuum to control actuators that control ...
2003 GMC Yukon XL - A/C problem	9/2/2007
Q: The air won't blow out of the vents. It will only blow out of the top of the dashboard from the ... A: There is 3 different (possible) fixes for this concern on this year vehicle. 1) The HVAC actuator ...
2004 GMC Envoy	9/2/2007
Q: Trying to remove money from center defrost vent under the front windshield. Need help accessing ... A: To remove the deflector itself, remove the side windshield trims. then pry up on the Upper Trim Pad ...
2000 Buick Century Custom 3.1	9/2/2007
Q: This car was given to me by my daughter. It had the wiring harness eaten by varmints. First, the ... A: The f/pump spd cont" is for a REGAL only. They probabally use the same harness/fuse block for ...
A/C Cold air "Stopped" 2002 Grand Am GT	8/31/2007
Q: First let me say THANKS for the time you spend helping people. Last week I bought a 2002 Grand Am ... A: First THANK you for your question and for allowing me to try to help. The request MUST come from the ...
P1415 Code, and A/C Compressor wont turn on	8/31/2007
Q: I have a 2000 GMC Sierra 1500 2WD 3door short bed, 5.3L, 4L60E Trans. its throwing the P1415 Code ... A: I'll address all three issues. 1) p1415. As much as I'd like to tell you 1 single part is could be, ...
P0449 code on 2000 Yukon	8/30/2007
Q: My 2000 Yukon (new style/4WD/5.3 engine) has had the P0449 code for about 15k miles (currently has ... A: MOST likely cause is the EVAP vent valve is plugged. You could remove it and take top off. It has a ...
When brakes applied truck dies	8/29/2007
Q: We have a 1994 6.5 diesel. 200,000 miles. When the brakes are applied it dies. It will start a few ... A: Could you please tell me if any codes are stored? If so what are they? Engine is getting fuel where? ...
window lift motor installation	8/29/2007
Q: Need help installing a window lift motor for a 2003 GMC envoy A: Remove the accessory switch panel. Remove the 2 trim panel retaining bolts (1 and 2). Use the trim ...
1999 chevy suburban AIR pump	8/28/2007
Q: where is the secondary air pump located on a 1999 suburban 1500. A: IF your vehicle is equipped with this, it would be located in the left front underhood. It would ...
replacing brake lines	8/28/2007
Q: I have to replace rusted brake lines on my 1992 Safari Van. The stock brake lines are bent into ... A: Coils are necessary to act as a "spring", if you will, or shall we say flexability. We could also ...
Overheated engine wont turn over	8/28/2007
Q: I overheated my 1999 GMC Sonoma P/U. Its a 4 cylinder engine. As I turn the ignition to start the ... A: JUST my opinion and experience, granted I also do not have the vehicle here, but USUALLY they need ...
BLOWN FUSE	8/27/2007
Q: I HAVE A 1999 GMC SUBURBAN THE ENG 1 FUSE UNDER THE HOOD KEEPS BLOWING I PUT A NEW ONE IN AS SOON AS ... A: That fuse feeds these items 1)Evap Canister Vent 2)Mass Air Flow Sensor 3)Camshaft Position Sensor ...
fuel pump problems	8/27/2007
Q: I have a 1998 Tahoe 5.7L with 135,000 miles. The fuel pump quit working. Fuses look good. Replaced ... A: Can you hear the pump running key on engine off? If so,you DO NOT have an electrical issue. If not, ...
Cooling fans on 2000 Pontiac Montana	8/26/2007
Q: I purchased a 2000 Pontiac Montana (3.4, auto, pwr everything, cc, etc...) this past December in ... A: Could you check the private box and send me the last 8 digits of your VIN (Vehicle indentification ...
no lt or rgt brake light, rear turn& hazards	8/26/2007
Q: Checked fuses,relays. Changed stoplight switch & bulbs. Turn signals& hazards only work in front. ... A: Yes the multi function switch MAY be your problem. Make sure your getting hot on the white wire into ...
Passenger door electronics not working	8/25/2007
Q: I have a 2003 Yukon and went to put the passenger front window down and nothing... then tried all ... A: If your remotes also stopped working also, the PDM (Passenger door Module) MAY need a reprogram. The ...
timming	8/25/2007
Q: 1998 Gmc Jimmy 4.3 4x4 130,000 automatic I just changed the intake manifold gasket now the vehicle ... A: Rotor should be lined up with the LITTLE "V" notch located on the Distributor body itself, where the ...
transfer case control mod	8/24/2007
Q: i have a 1999 gmc jimmy 4.3l it has a np8 transfer case with a 4 button 4wd switch when i start it ... A: Sounds like your on the correct path. I do not have access to Parts, sorry. I can tell you that the ...
2000 GMC JIMMY	8/24/2007
Q: I have a 2000 GMC Jimmy. My truck will run fine one minute and not the next. I can be driving and ... A: The fuel pressure is low. 50 is too low for this system. It neede between 60-66 psi, no more no ...
2003 GMC Yukon 4.8L V8	8/23/2007
Q: Two things happening..1)When I turn the wheel all the way to the left, I hear one fairly loud click ... A: The sound IS PROBABALLY the front crossmember. There is/are some factory bulletins that address this ...
Service Light	8/22/2007
Q: 2001 Jimmy SLT 4x4 with trouble code PO410 I have replaced the secondary air pump twice, thermostat ... A: There is an updated hose to attach to the AIR pump. It actually comes in a kit. Here is the part # ...
GMC Yukon 2004 ignition	8/22/2007
Q: I can not turn my ignition to start my yukon. My steering wheel is not locked. i can turn it ... A: Most likely it'll need an igintion lock. It is not really a job for a do it yourselfer. I JUST ...
Fuel Gage Moves	8/21/2007
Q: I have a 2001 Chevy 1500 Truck, 350(ish) v8 engine. The gas gage has started to jump back and ... A: here is a GM bulletin on a similar issue. Fuel gauge may be inaccurate or drops to empty (E) and the ...
2001 Sonoma A/C quit	8/21/2007
Q: Saturday I was driving the truck and the A/C was blowing very cold (have never had a problem before, ... A: I would think of a few things to check The low side pressure cycling switch MAY be occasionally ...
Repair Question	8/21/2007
Q: My speedometer lights went out on my 2001 GMC Sierra along with my lights that illuminate my A/C ... A: You can check the power going to either module (terminal E on the HVAC control module gray wire) or ...
99 GMC Safari	8/20/2007
Q: Sometimes the instrument cluster in my van does not register. All of the guages go either all the ... A: I see one common item, G105 (Ground circuit 105) which terminates (or grounds) at the Thermostat ...
gmc savanna 2500 misfires	8/19/2007
Q: gmc savanna 2500 misfires when going up hills on highway. took it to 3 places did complete tune up, ... A: First what year is van? What engine? What could you get the codes (check engine light) codes for me ...
CP1345 Code	8/19/2007
Q: I'm working on a 2WD 1998 1/2 ton Chevy P/U with A 5.7L V8 and a 4 spd auto. Not being aware that ... A: On the black plastic intake on REAR facing the firewall AND also on the distributor there is a small ...
1999 Yukon doesn't always start.	8/18/2007
Q: I have a '99 Yukon that will start sometimes, other times, it will click but not even attempt to ... A: I would check the battery, battery connectors, terminals, and battery bolts. Make sure all the ...
Rear a/c controls	8/17/2007
Q: Wife just got a 2004 gmc envoy, but the rear hvac controls won't work. (rear air does work with ... A: There is a VERY long diagnostic workesheet for the vin 6 rear blower inop from rear switch. I will ...
98 Buick Century - one brake light	8/17/2007
Q: Well, the driver's side brake light doesn't come on when i hit the brakes. I replaced the bulb with ... A: Check and see if you can get a test light to light up. If not, you can follow that wire back (dark ...
4.8 misfire under load	8/17/2007
Q: I have a 2000 silverado 1500 with a 4.8,when pulling it will start skipping ,going along at highway ... A: I would check 2 things at this point. I would check the crankshaft position reluctor ring mounted on ...
ticking sound not knocking	8/16/2007
Q: Last week it broke down something with my distriubutor so it got fixed.Then it came back on like a ... A: Yes it is possible to be a cracked plug or a broke/cracked wire or wire boot. If it does it all the ...
Rear a/c controls	8/16/2007
Q: Wife just got a 2004 gmc envoy, but the rear hvac controls won't work. (rear air does work with ... A: One last set of questions Could you give me the 7th (seventh) digit on your VIN Will be either a 3 ...
GMC fog lamps	8/15/2007
Q: I have a 2000 gmc yukon xl 4x4, my fog lamps will not turn on. The orange small light inside the cab ... A: Of course the fog lamps ONLY work with the headlamp switch ON, I am sure you tried this, correct? If ...
1999 & 2000 Chevy trucks	8/14/2007
Q: Fuel pumps went out within a couple of weeks of each other. Replaced with aftermarket and fuel ... A: I would double check pressure again while cranking. If they are old body 5.7L pressure should be ...
2003 headlamps both out same time	8/14/2007
Q: I have a 2003 Gmc Envoy. Both low beam headlights went out at he same time. I checked the fuses ... A: With an assistant. have them turn on the low beams and you have hand on the HDM relay under the ...
98 g1500 no start	8/14/2007
Q: I have a 98 chevy g1500 with a 5.7L which was towed in with a no start condition. I confirmed that ... A: I am sure you checked the ECM1 fuse? If there is no ICM signal on ckt.423 (white) did you check the ...
1986 gmc 6.2 lit transmission	8/13/2007
Q: I have a 1986 GMC 6.2 lit 1/2 ton truck, I have gone through 4 trasmissions in the last 5 years, now ... A: Check with your local trans shop, see if they can help. Check around. I would even maybe find out ...
Passenger Electrical Problem	8/13/2007
Q: I have an 04 GMC Sierra 2500. When the passenger door is open the door locks are inoperable - only ... A: I'm going to do a bit more checking on this problem. I looked through the owners manual AND the ...
AC Blower/Fan Problem	8/12/2007
Q: I have a 2006 GMC Sierra 3500 WT standard package. The fan speed switch for the AC works when it is ... A: It sounds like the Blower resistor AND blower resistor harness pigtail connector. Here are the part ...
Safari runs 1-2 seconds then stalls	8/12/2007
Q: I have a 99 GMC Safari van, 4.3 litre engine. Sometime in order to get it to start I have to put the ... A: I would get the fuel pressure checked. These engines need 60-66 PSI to start. If not they WILL not ...
2003 envoy heater core replacement	8/12/2007
Q: how hard of a job is it to replace the heater core on 2003 GMC Envoy has all the bells and chimes ? A: It is a VERY large job, the ENTIRE dash/ IP carrier/ IP assy HAS to be removed. I JUST did an A/C ...
door panel removal 03 sierra	7/30/2007
Q: Trying to replace my mirrors. Need to remove door panel to get to harness. Can you help? A: here is procedure, from GM Remove the door handle bezel. (Insert a flat-bladed tool between the door ...
Headlight Switch	7/30/2007
Q: How do I remove a headlight switch from a 1997 Chevy Lumina? I believe it is not working properly. I ... A: Here is the procedure for removing headlamp switch... Remove the steering column opening filler ...
01 Chevy Express 3500 5.7L V8	7/29/2007
Q: I was hoping you might be able to help me out as this model is similar to the GMC Savana Van. I ... A: The balancer and pulley are one assembly. If there is any problem with one, both will need to be ...
Spare Tire Will Not Release	7/29/2007
Q: Own a 2001 GMC Yukon and the spare will not release. My father is a shade tree mechanic and wants to ... A: As long as ya'll have the proper tool in the hoist, I would turn it and see if someone could get ...
check engine light	7/29/2007
Q: 99 gmc check engine light is on after smog test A: what kind of GMC?? If it is gas truck with GenII v-8 it could be any of these things DTC P0101 Mass ...
Knock Sensor	7/28/2007
Q: I have a 2001 GMC Yukon, I just got it back from the shop(tune-up,100K) and they advised replacing ... A: Why are they suggesting the replacement of a Knock sensor? Is the Check Engine light on? If the ...
electronic door locks	7/28/2007
Q: 2000 regal lse - electronic locks will not LOCK either with door switch or remote. They will UNLOCK ... A: Everything is controlled by the BCM (Body Control Module)that has to do with Door Locks. There is ...
2000 gmc 5.3 hard starting problem	7/28/2007
Q: My problem is similar to another post. I replaced the regulator, fuel pump and filter with all AC ... A: The dropping to -0- fast is what I see may be the problem. Isolate the problem by pinching off the ...
'98 Tahoe Electrical issue (5.7 V-8)	7/26/2007
Q: Looking back, all of these things might or might not be related. The first problem started three ... A: Has or did the fuel gauge still jump? I think the radio is at fault. I have run into the factory ...
engine codes i cant fix	7/26/2007
Q: i have a 02 chev silverado with 5.3. i keep getting codes po131, po151, and po157. i have replaced ... A: The aftermarket exhaust COULD be your problem. I would first, however check ALL welds and joints, ...
Fuel pump relay	7/26/2007
Q: I'm having a hard time locating the fuel pump relay on a 1992 GMC Safari.My wife was driving when ... A: The pic I have is REALLY fuzzy, they do not give a clear indication. It REALLY looks like is it on ...
2001 Yukon AC Delco Heater Control	7/25/2007
Q: I have a 2001 GMC Yukon. The front air control switch only operates in the 3, 4 and 5 position. Does ... A: No I really do not believe the Control head is your problem. I really think the Blower resistor is ...
1994 GMC Suburban	7/25/2007
Q: My hood latch does not work. The cable has come loose from under the dash. How do I reconect it? A: The cable has a small "ball" that fits into a slot on the pull handle. Assuming the handle is NOT ...
interior door panel rattling	7/24/2007
Q: my wife and i just purchased a 2003 yukon xl with 70k on it. Great running well taken care of auto, ... A: Congrats on the purchase. I have seen no "common" problem with door panels EXCEPT the small ...
2002 gmc evnoy pcm1 fuse	7/24/2007
Q: every time when trying to turn key into run position the pcm1 15amp fuse blows i have changed the ... A: It is eithe one of the ignition coild or one of the injectors. That is ALL that fuse feeds. It COULD ...
fan control	7/23/2007
Q: 2001 Yukon XL VORTEC 8100 V8. Fan control level 1 & level 2 have stopped working. The fan works ... A: The blower resistor located right next to the blower fan. It has 6 or 7 wire input and 2 wire output ...
BCM	7/23/2007
Q: I own a 2001 Chevrolet Monte Carlo SS.3.8ltr Recently I have been having many issues related to the ... A: Unless you have a Scan tool with GM TIS2k programming abilities, you'll need to have the BCM ...
2002 GMC Envoy Headlights	7/22/2007
Q: My headlights turn off every so often. No rhyme or reason and then they just come back on. Any ... A: I would suspect either a loose connection or terminal on either the headlight switch, or at a ...
Air stuck on defrost of 2004 Sierra 2500 HD	7/22/2007
Q: I have a 2004 GMC Sierra 2500HD with a 6.0 engine. I unhooked the battery to put a new starter in ... A: Try this actuator recalibration procedure...... Remove the HVAC/ECAS fuse for a minimum of 10 ...
power steering and brakes	7/22/2007
Q: both my power steering and power brakes have stoped working simoltainously. There is no fluid leak. ... A: I would guess you have HydroBoost.. which is why the steering and brakes went out. ( HydroBoost = ...
95 suburban tdiesel no start HELP	7/21/2007
Q: 95 suburban K1500 Turbo diesel 95k miles. Died the other day, towed it home, it started up and ran ... A: while cranking under drivers side along frame (where a gasoline truch fuel filter is mounted) is the ...
temperature control	7/21/2007
Q: I have a 2004 GMC Yukon XL Denali. In the front seats there are separate controls to control the ... A: It is a common issue with that HVAC system. The best thing to do is take it to the dealership OR a ...
th 400 transmission	7/20/2007
Q: I have a 1989 chev k 1500 305 engine turbo 400 trans It,s having a hard time going into reverse,a ... A: Assuming you have good fluid and good fluid pressure, here is a list of items it could be: Input ...
2004 Yukon XL AC	7/20/2007
Q: Just changed the battery and the AC is only blowing cold on the passenger side. Did the mechanic do ... A: No. It is a common issue with that HVAC system. The best thing to do is take it to the dealership OR ...
DIC Displays "Battery Not Charging" Intermintently	7/19/2007
Q: I have a 2003 Yukon LT 2WD, 5.3L Flex, Lately I have been experiencing an intermittent DIC display ... A: I would check for DTC's in the PCM. If none, here is the criteria for turning on the BATTERY NOT ...
ENG-I 20A Fuse keeps blowing	7/19/2007
Q: I have a 1998 Ext. Cab Chevy K1500 4X4 5.7 Vortec. My problem is that the fuse ENG-I keeps blowing. ... A: I can tell you the items that fuse feeds, and you can locate short. PAY special attention to ANY ...
air conditioning problem with 2002 GMC Denali XL	7/19/2007
Q: My question is related to one you answered recently regarding an air conditioning problem. I have a ... A: I checked ALL bulletins and PI's for youe\r vehicle and year before and year after. The ONLY reflash ...
dash/instrument panel lighting doesn't work	7/18/2007
Q: 2002 Chevy Impala LS; 3.8L V6; 76K miles. What would cause the dash/instrument panel lights not to ... A: If the lights do not come on with the by the light switch, and looking at the schematic, I would ...
2000 Denali fron ac not cold	7/18/2007
Q: I have a 2000 GMC Yukon Denali 4WD 5.7V8. with 99 body style. Rear AC blows cold. Front AC takes 30 ... A: It REALLY sounds to me like you do have a low freon issue. I would take it to a good HVAC repair ...
93 CHEVY FULL SIZE BLAZER	7/18/2007
Q: TRYING TO REMOVE FUEL TANK TOOK 2 BOLTS OFF BUT IT WONT RELEASE WHY? A: If it is a left side tank, you'll still have the fiiller neck and fuel lines and electrical ...
96 gmc sierra a/c problem	7/17/2007
Q: I have a 96 Gmc Sierra 4.3 V6. When I turn the a/c on, the blower will only come on when i put it ... A: Depending on your abaility, I can tell you how to EXACTLY check to pinpoint either the blower ...
1995 gmc truck a/c problem	7/17/2007
Q: About 2 weeks ago, I was pulling into my driveway and the a/c quit. When it did I heard a slight ... A: Is the compressor coming on? where did the noise come from....underhood, or under the dash. You say ...
98 GMC SONOMA SINGLE CAB	7/17/2007
Q: I HAVE THIS SONOMA IT IS A FOUR CYLINDER AND I HAVE PUT THREE FUEL PUMPS IN IT YOU BE DRIVING DOWN ... A: I would strongly suspect the ground for the fuel pump circuit. I think it is located almost on the ...
Braking Causes Engine Failure	7/16/2007
Q: I have a 97 (sorry is that close enough to 98) GMC Jimmy 2wd. The last 2 or 3 times I applied the ... A: I see one thing looks like may be common to all your complaints. There is a ground G105, located on ...
1999 GMC Sierra 1500 5.3L	7/16/2007
Q: I just a fuel pump go bad. I replaced the fuel pump and filter, now I have a hard time getting the ... A: Yes that could be the problem. Instead of cranking engine, turn key on, engine off. Then after about ...
AC defrost vents only	7/16/2007
Q: 2003 GMC Sierra 2500 HD. Cold air blows from the defrost vents only. Placed in a new controller in ... A: Two common items I have run into that COULD be your problem First would be the mode door actuator ...
blower motor fuse	7/15/2007
Q: 91 GMC Jimmy V-6 ac/heater blower motor fuses keep blowing 25 amp and tried a 20 amp? Original blwr ... A: Fuse feeds the selector switch and the selector switch feeds the current to the blower switch. The ...
1999 GMC Sierra 1500 5.3L	7/15/2007
Q: I just a fuel pump go bad. I replaced the fuel pump and filter, now I have a hard time getting the ... A: Check the fuel pressure regulator for ANY sign of fuel. If you remove the vacuum line from regulator ...
1999 gmc does not start when cold.	7/13/2007
Q: my denali doesn't start when it's cold.i have to spray it with starting fluid.i hear fuel ... A: It really sounds to me like your fuel pump is your fault. If you can start it everytime with some ...
99 suburban AC issues	7/13/2007
Q: I have a 99 Suburban 1500 5.7l and the ac is fully charged it blows cold air but will not transition ... A: Sounds like the mode door actuator is your fault. It is located above the gas pedal on the HVAC ...
1993 gmc jimmy turn signal	7/12/2007
Q: I have a 1993 gmc s15Jimmy the left turn signal flashes very fast in the rear the front does not ... A: I only see two things then it could be. There is a ground G125 located JUST above the light screwed ...
'03 Yukon XL AC Belt Slipping	7/12/2007
Q: I have a 2003 Yukon XL. The serpentine belt which drives the AC compressor is slipping. I have ... A: This condition may be caused by liquid slugging of the A/C compressor. This condition is caused by ...
97 Jimmy	7/12/2007
Q: My gas gage does not work.Is there a few simple things I can try before I get it torn apart by a ... A: The only thing I can think of is you can try a bottle of GM Fuel System Treatment Plus (P/N 88861011 ...
1994 6.5 turbo diesel	7/11/2007
Q: I have a 1994 6.5 turbo diesel and while driving down the road at highway speeds 55 to 65 every once ... A: The ONLY thing it sounds like you have not replaced is the injection pump. USUALLY a code will set ...
98 gmc sierra 1500 4.3 v6	7/11/2007
Q: My husband's truck will not start. It spins over but acts like it is not getting fuel. We've had ... A: I would then suspect wiring from relay to pump. it passes through nothing else. If the relay is ...
1994 6.5 turbo diesel	7/10/2007
Q: I have a 1994 6.5 turbo diesel and while driving down the road at highway speeds 55 to 65 every once ... A: Does it do it at throttle, or steady cruise? Is there ANY smoke at all if so what color? Does it ...
95 olds 88 ac clutch	7/10/2007
Q: as I was searchi