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GMC Repair/Questions
| Subject | Date Asked | Expert |
| Service Airbag message | 2/2/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 2003 GMC Sierra 1500HD, Vortec 6000 V8, 4x2. The service airbag message appeared ... A: The SIR system uses many different inputs to determine a fault. It could be anything from a terminal ... | ||
| Gmc Yukon windshield wiper connector | 2/1/2012 | CAJUNSC/RAMBLER390 |
| Q: we have a 98 gmc yukon that has the familiar wiper issue, except that the issue is a loose connector ... A: Which part is loose? The connector with the wires and terminals, or the wiper motor pulse board, ... | ||
| gmc truck | 1/29/2012 | CAJUNSC/RAMBLER390 |
| Q: on a 2007 gmc sierra 2500 hd slt,i changed the fuel filter and the battery now it wont start,any ... A: I am assuming you primed the fuel system? Either way I have seen the primer "bulb" have to be pushed ... | ||
| heated driver seat not working | 1/27/2012 | CAJUNSC/RAMBLER390 |
| Q: 2004 Yukon XL. Heated driver seat shuts off after 10 seconds when both the seat cushion and seat ... A: I would HIGHLY suspect the heated seat element burned out. It is fairly common. The seat has to be ... | ||
| Check engine light | 1/27/2012 | CAJUNSC/RAMBLER390 |
| Q: I realize you are listed as a GMC expert but I am hoping you can help me with a Saturn issue since ... A: If the original code was 301, and the tune up did not repair, I would next look and at the fuel ... | ||
| Brakes | 1/24/2012 | CAJUNSC/RAMBLER390 |
| Q: Sorry the year is a 2000 GMC Sierra 4x4 the brakes work fine until I am almost stopped then I hear a ... A: If the ABS is prematurely activating I would suspect one of the wheel speed sensors, or one of the ... | ||
| No Crank/Security Lockout/Wierd Glitches | 1/23/2012 | CAJUNSC/RAMBLER390 |
| Q: I bought a New 2008 GMC Sierra Crew Cab 4X4 in Nov. 2007 VIN#3GTEK13MX8G114535. The first problem I ... A: Brady First the speakers. I have seen all 4 speakers go out together, or very close to all at same ... | ||
| Electric Problem with Headlamps | 1/23/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 2005 K1500 Chevrolet Suburban in which the headlamps have been occasionally coming on after ... A: Without actually seeing it, I would suspect the switch above the BCM. My only draw back from this ... | ||
| No Crank/Security Lockout/Wierd Glitches | 1/21/2012 | CAJUNSC/RAMBLER390 |
| Q: I bought a New 2008 GMC Sierra Crew Cab 4X4 in Nov. 2007 VIN#3GTEK13MX8G114535. The first problem I ... A: 2 questions, and you can private ask me the answers, please. Where do you have the bathroom heaters ... | ||
| 99 GMC Sierra Electrical Problem | 1/20/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 99 Gmc Sierra with a 6.0 and automatic transmission. My problem is When I apply the brakes ... A: I looked at the schematics and it appears that alot of these circuits have a common grounding ... | ||
| rebuild of EBCM necessary? | 1/18/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 2003 GMC Yukon XL. Around Christmas 2011 I got a "service brake system" warning in the ... A: First I would have to know the code to be able to tell if the diagnosis wwas correct. IF SO and it ... | ||
| DRL idiot light on dash panel | 1/17/2012 | CAJUNSC/RAMBLER390 |
| Q: I just had my DRLs repaired at the GMC dealer this week. When stating the vehicle the regular ... A: The GREEN DRL light should be illuminated when ever the DRL's are on. Not sure what the "regular ... | ||
| 4x4 not working | 1/15/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 99/00 GMC Sierra 1500 5.3L. My front end doesn't seem to have any power if the wheels are ... A: So if I understand, with truck in air, and you engage the 4wd, all four wheels have power. When you ... | ||
| 4.3 liter 1994 GMC Sonoma pickup | 1/12/2012 | CAJUNSC/RAMBLER390 |
| Q: The A/C has not worked for quite some time. I have continued to drive it without air but, just ... A: You can disable the compressor by unplugging the clutch electrical connector on the top of ... | ||
| Turn signal switch replacement | 1/10/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 2003 Chev. Silverado and need to replace the turn signal combination switch. It looks easy ... A: There should be 3 screws holding the lower cover on. Remove these and the top one will have 1 ... | ||
| heater/AC controls 2001 GMC PU | 1/2/2012 | CAJUNSC/RAMBLER390 |
| Q: I have a 2001 1/2 ton GMC pickup: on the temperature control the ac works great but the heater is ... A: If it is getting warm, but not hot, I would first check the cooling system, and make sure there is ... | ||
| 98 GMC K1500 BACKFIRES | 12/26/2011 | CAJUNSC/RAMBLER390 |
| Q: when i start up my truck and drive it starts bucking and backfires then i will take my foot off the ... A: I would recommend a complete tune up, including spark plugs, plug wires, distributor cap and ... | ||
| Power window | 12/23/2011 | CAJUNSC/RAMBLER390 |
| Q: On my 2002 Buick Century the drivers front door window will go down all by itself and you can not ... A: I does it come up when dry by its own? Or do you have to pull it up by hand? If comes up on it's own ... | ||
| repair | 12/22/2011 | CAJUNSC/RAMBLER390 |
| Q: I have a 2000 somoma 3.1. First thing of the morning as the truck heats up everything is find but ... A: I would check for low coolant, coolant restrictions (hoses, heater core, radiator, etc..) they can ... | ||
| dome lights 07 gmc savanna | 12/22/2011 | CAJUNSC/RAMBLER390 |
| Q: dome lights don't work at all.not with doors or dash cntrl.all fuses are good.no bk up lights ... A: I looked at the schematic. The voltage for the back up (reverse) lamps is supplied by the ... | ||
| Head Lights | 12/21/2011 | CAJUNSC/RAMBLER390 |
| Q: I own a 2003 GMC Envoy and the problem I'm having is both head lights don't work. I was told that is ... A: More than likely, if both went out at same time, it is the headlamp "module" which is actually a ... | ||
| Blower | 12/19/2011 | CAJUNSC/RAMBLER390 |
| Q: I have a 2007 GMC Sierra. The fan motor has stopped working on anything but the vent. It blows ... A: Is it a dual system? Either way It is probabally the mode valve actuator. If you could take it to a ... | ||
| Oxygen senors | 12/19/2011 | CAJUNSC/RAMBLER390 |
| Q: I have a 1999 GMC Yukon SLT with a 5.7 Liter motor I am told it depends on my Transmission as to the ... A: There are 2 sensors on each "bank" of cylinders (left = Bank 1, Right = bank 2). There is also 2 ... | ||
| GMC Canyon | 12/18/2011 | CAJUNSC/RAMBLER390 |
| Q: I have 2006 GMC Canyon 3.5L 4x4 with 42000 miles.I was driving in the city then stop at the store ... A: I would check fuel pressure, first. I would also have the PCM (control Module) scanned for any ... | ||
| Fuel Level Sensor | 12/18/2011 | CAJUNSC/RAMBLER390 |
| Q: I have a 2006 GMC Envoy, 4Wd, 6 cyl motor- had a diagnostics test done and it read that my fuel ... A: I am not a parts person, however MOST later model 2005 and up GM level sensors ARE usually able to ... | ||
| 1997 GMC Sierra C1500, 2WD 5.7L V8; ENG-1 fuse blows | 5/17/2011 | CAJUNSC/RAMBLER390 |
| Q: On my GMC with 186,xxx miles, the ENG-1 fuse blows in the Fuse/Relay Center under the hood. I keep ... A: That fuse protects all 4 o2 sensors, the cam sensor, MAF sensor, EVAP purge valve and EVAP vent ... | ||
| transmission leak | 5/16/2011 | CAJUNSC/RAMBLER390 |
| Q: i took my chevy venture van to get an oil change and told him that i find small spots of ... A: Any leak has the potential to be damaging. I would take it to a more reputable repair shop or ... | ||
| Diagnostic code questions... | 5/11/2011 | Marvin Saunders |
| Q: Mr. Saunders, I have a 2001 Buick LeSabre Custom (3.8 engine), and my "Service Engine Soon" light is ... A: the 0128 code is coolant below operating temperature which could mean that your thermostat is stuck ... | ||
| AC | 5/11/2011 | Marvin Saunders |
| Q: I have a 2002 GMC Yukon. The top ac vents are blowing cold, but the main vents in the front driver ... A: it sounds like the stop/start control module is starting to go out or the vacuum switch is not ... | ||
| Engine/tranny swap | 5/4/2011 | Marvin Saunders |
| Q: Firstly Hello, I'm hoping you can help with a Chev question. I am trying to find out if a 3.1/auto ... A: The 4T60 was the transitional model from the old Hydramatic (formerly called the 440-T4 aka 4T60) to ... | ||
| wiper arm 99 gmc 1500 sierra | 5/3/2011 | Marvin Saunders |
| Q: I've got the nut off to replace the wiper arms, what else is holding the arm in place? thanks for ... A: at the base there will be a small slide clip. it is part of the wiper arm and does not separate from ... | ||
| ABS | 5/3/2011 | Marvin Saunders |
| Q: I have a 2000 Z-71 4x4 and it just started to experience an ABS problem. On dry surfaces and at low ... A: I am so sorry for the bicycle add in. as I was answering I was thinking on what bicycle chopper to ... | ||
| ABS | 5/3/2011 | Marvin Saunders |
| Q: I have a 2000 Z-71 4x4 and it just started to experience an ABS problem. On dry surfaces and at low ... A: the abs should work at all speeds. if you brake hard, it will be more pronounced. i would bleed the ... | ||
| hot to fuel pump pigtal | 5/1/2011 | Marvin Saunders |
| Q: open fuel tank bought 3 new fuel pump but still not working but pigtail to pump working or hot ... A: what is the year, make and model of your vehicle? did you receive any type of wiring instructions ... | ||
| duramax engine noise | 4/30/2011 | Marvin Saunders |
| Q: I have a 2005 GMC 2500 pick up with a 6.6 duramax. When I remove the oil filler cap while it is ... A: How long have you had the vehicle? Did you buy it used? If it were the pulleys you would hear the ... | ||
| Intermittent service engine soon light | 4/29/2011 | Marvin Saunders |
| Q: I have an intermittent service engine soon light that comes on stays on for a while and after period ... A: there is a panel under the hood. open drivers door, look on the side of the dash. also look at the ... | ||
| gmc sierra fuel module | 4/28/2011 | Marvin Saunders |
| Q: I'm having trouble with a 2007 gmc sierra fuel control module. While i was driving the truck it ... A: you will need an electrical diagnosis. it sounds like there is at least one short in the harness ... | ||
| Missfire | 4/27/2011 | Marvin Saunders |
| Q: Why does my 99 gmc sierra 5.7 engine 4x4 misfires when put on reverse and sometimes at low idle then ... A: I had the same problem. I scanned my codes and had two bad wires (new wires installed). At times, I ... | ||
| chevy is close to gmc lol | 4/26/2011 | Marvin Saunders |
| Q: ..i have a 95 chevy blazer...for the past year or so occasionally(mostly when has been running a ... A: Do a compression test. You can get a cheap tester at any "chain" auto part store. when you have the ... | ||
| Knock Sensor for 2005 Chevy Suburban | 4/25/2011 | Marvin Saunders |
| Q: An engine light came on on my 2005 Chevy Suburban and I had it checked by a mechanic who said the ... A: should be on either side. all you need is a wrench. I am unclear on the size, but you will need ... | ||
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. Engine mechanical. Automatic or Standard Transmissions. Drive Line (drive shafts, axles) Rear and front differentials and 4wd Transfer Cases. 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.
I need YEAR, MAKE and MODEL of vehicle, and ENGINE SIZE and TRANSMISSION type, IF applicable to the question. The more information, the better.
EFFECTIVE Jan. 2012, I will not answer questions about PARTS or AFTER MARKET installed items.(After Market radios, entertainment systems, alarms, etc...)
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 Master Technician. A-9 Light duty Diesel certified as of 2011. 100% GM certified MTC Certified. GM World Class Technician.
Education/Credentials
High School graduate. No College or higher learning.
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