| Subject | Date Asked | Expert |
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| p0452 error code? | 7/7/2009 | Tim hagan |
Q: First thank you for responding yesturday. Could this code be caused by an improperly fitting sensor ...
A: it could be leaking if that connection is loose, you will get that code if pressure is leaking from ...
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| Transmission solenoid | 7/7/2009 | Tim hagan |
Q: How do you change a solenoid in the transmission? I bought the solenoid but not sure on how to ...
A: here is some more info, as for removing the pan, it is much easier with a hoist, we remove the trans ...
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| ABS light | 7/5/2009 | Tim hagan |
Q: 2001 Chev. Blazer Thank you in advance for taking my question. I am having no mechanical problems ...
A: might be able to clear it by disconnecting the battery, it is because you had the rear tires moving ...
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| Chevy running hotter than usual | 7/2/2009 | Tim hagan |
Q: Car: 2001 Chevy Venture 3.4 L - 100,000 miles on odometer Issue: I bought the van in january 2009. ...
A: there could be air trapped in the system if it was not properly purged when the intakes were done, ...
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| AC BLOWER | 7/2/2009 | Tim hagan |
Q: MY BOSS HAS A 2006 CHEVY SILVERADO AC BLOWER NOT WORKING AT ALL, I'M DOWN IN THE TURKS AND CAICOIS ...
A: should be able to access the blower motor resistor wires from under the right side hush panel, if ...
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| 2004 GMC 2500HD ENGINE MISFIRE | 7/2/2009 | Tim hagan |
Q: GOOD EVENING TIM: HAVING SCANNED MOST OF YOUR GMC PROBLEMS, IT SEEMS I'VE HAD ALOT OF THE SAME ...
A: Important: You must perform the crankshaft position (CKP) system variation learn procedure before ...
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| transfer case 2002 safari van awd | 7/1/2009 | Tim hagan |
Q: when i turn the wheel the van seems to jump or jerk (sort of a pulsing) i was told it could be in ...
A: it could be something in the transfer case, or depending on the mileage and what kind of maintenance ...
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| air conditioner /Rear Right back side car | 6/29/2009 | Tim hagan |
Q: The right rear tire blow out (wife driving) and i think they lost all coolant from radiator and ...
A: well it could be a major repair, depending on where the lines actually broke off at, if they are ...
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| Olds air shock | 6/15/2009 | Tim hagan |
Q: My 1996 Olds ninety eight air shocks seem to be pumped up much too tight. The rear end is hiked up ...
A: it could be the sensor that is bad, but if it was it would not inflate the rear end up either cause ...
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| Olds air shock | 6/15/2009 | Tim hagan |
Q: My 1996 Olds ninety eight air shocks seem to be pumped up much too tight. The rear end is hiked up ...
A: yes it is in with that compressor at the right rear, not sure if you can buy just that part, seems ...
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| 98 gmc jimmy | 6/13/2009 | Tim hagan |
Q: Air conditioner does not work how can i fix this? ANSWER: could be a lot of things, need to put ...
A: so you have filled it with freon and it still does not blow cold? if there is no freon in the ...
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| Power steering line leak | 6/12/2009 | Tim hagan |
Q: One of two power steering lines in my 1996 GMC Sierra 1500 is leaking, how can I tell if it's the ...
A: install the new line, make sure to use new o-rings, fill half way to the full mark on the pump cap ...
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| replace and repair master cylinder for 2000 gmc sierra | 6/11/2009 | Tim hagan |
Q: I have replaced master cylinder and I'm unable to bleed the brakes on the abs system to get it ...
A: many times on these types of trucks you will need to do what is called and automated bleed process ...
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| blowing ecm fuse | 6/8/2009 | Tim hagan |
Q: What causes ecm fuse to blow when you shift in reverse? ANSWER: possible short in the nuetral ...
A: these vehicles are typical for the nuetral safety switch shorting internally, you will probably find ...
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| Leaking Antifreeze | 6/6/2009 | Tim hagan |
Q: Our 2001 GMC Savana 14' box truck has an antifreeze leak on the right side of the engine. The fluid ...
A: anitfreeze does run through the intake, I would check the right side, rear, you might see some ...
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| Wiper harm removal | 5/28/2009 | Tim hagan |
Q: I have a Yukon 1997 and need to removed the wiper arm witch is Stock in place, I know a bought the ...
A: ok sorry I was not exactly sure which arm you had on it. With that type you have to pull that tab ...
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| 87 K5 Blazer stalling | 5/28/2009 | Tim hagan |
Q: I have an 87 K5 Blazer I know not a GMC but pretty much the same thing. Well it was bought with ...
A: i would check to make sure that you have removed any and all water from anywhere it might have ...
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| 2002 GMC Envoy | 5/27/2009 | Tim hagan |
Q: I have a 2002 GMC envoy. The vehicle is equipped with a electro-viscous PCM controlled clutch fan. ...
A: it is the clutch fan itself that is causing the noise, i believe you can buy the clutch itself, if ...
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| 95 buick won't start | 5/27/2009 | Tim hagan |
Q: I had a leak at the lower intake seal, replace them and gaskets and gaskets on upper plenum. We put ...
A: did you make sure not to get any excess coolant into the engine when you removed the lower intake? ...
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| 2006 GMC Sierra A/C blower | 5/20/2009 | Tim hagan |
Q: Mr. Hagan, I have a very low milage 2006 GMC Sierra. A/C blower has six positions (off and 1-5). ...
A: if speeds 2-4 do not work, ie only very low speed or high speed, then the blower motor resistor is ...
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| 1999 GMC sierra 1500 Z71 pick up new body | 5/15/2009 | Tim hagan |
Q: every once in while the power steering will stop working for a couple seconds while turning.
A: you can try a to flush the power steering fluid as there might be debris in it, if that does not ...
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| 1998 Saturn SL1 Rear Wheel Cylinders | 5/15/2009 | Tim hagan |
Q: I just took my saturn in to have it safety checked at my regular garage.The tires just passed the ...
A: there are two ways to check it 1) you can crawl under the car and look for fluid on the backing ...
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| 1995 GMC Yukon won't start after reaching operating temp | 5/12/2009 | Tim hagan |
Q: I have a 1995 Yukon that won't start after the truck has reached any kind of temp. If I let it cool ...
A: because when you first start it the pump is cold, after you run it the pump builds heat which is ...
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| buick century fuel guage problems | 5/8/2009 | Tim hagan |
Q: I have 2001 buick century when I start the car and ideal for awhile the fuel needle drops to empty ...
A: could be a faulty fuel level senxor in the gas tank, or a broken baffle in the gas tank that is ...
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| Heater Core | 5/8/2009 | Tim hagan |
Q: I believe my heater core might be damaged or has a leak in it. So, here's the vehicle history so ...
A: you might be able to obtain some coolant system sealer that might seal the leak if it is rather ...
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| '07 GMC2500HD bumps & bounces between 40-55 | 5/6/2009 | Tim hagan |
Q: After taking our 07 GMC 2500HD in for balance and rotating, I noticed it bumping/bouncing when you ...
A: i would check to make sure there is nothing bent under the vehicle ie; frame, frame cross braces, ...
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| remove driver side door panel for 2007 Denali | 4/29/2009 | Tim hagan |
Q: How do i remove the driver door paned for a 2007 GMC Denali to replace the outside mirror? i have ...
A: Preliminary Procedure Remove the door upper trim panel. Refer to Upper Extension Trim Panel ...
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| Changing trans. fluid | 4/28/2009 | Tim hagan |
Q: I am simply trying to save $ by changing the transmission fluid on a 2004 2W drive Yukon. Purchased ...
A: to properly flush the system you do need a special machine that power flushes the system. You can ...
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| Electrical or computer problem | 4/25/2009 | Tim hagan |
Q: Tim I have a 2008 GMC Sierra Denali. I love the truck when operating correctly, however it is parked ...
A: do you have XM radio? if so has your three month trial expired? If so the xm radio is stuck in a ...
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| Spare Tire Removal | 4/24/2009 | Tim hagan |
Q: I have a 2007 GMC Work truck, I cannot get the spare tire off. What is the trick, I am doing what ...
A: there is a safety device inside the plate that holds the spare tire up, you can sometimes use a ...
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| 99 sierra hissing noise | 4/23/2009 | Tim hagan |
Q: I have a 99 GMC Sierra with a 5.3 vortec. I get a really loud hissing noise every time I accelerate ...
A: do you have any air intakes or aftermarket parts on the vehicle, if so I would check those, if not I ...
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| 2001 Ponitic Bonneville dash lights don't work | 4/18/2009 | Tim hagan |
Q: Question I just purchased a 2001 Pontiac Bonneville SSEi, and most of the instrument panel lights ...
A: I am not sure, but didn't you ask this question the other day? Just curious cause I know I answered ...
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| Fuel Level sensor! | 4/18/2009 | Tim hagan |
Q: My gas gauge started moving back and forth making the low fuel light come on. I filled my tank ...
A: In short..unless you have a hoist and have experience removing the gas tank, take to your local ...
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| Purge vent valve | 4/16/2009 | Tim hagan |
Q: I have a 2000 Chevrolet 5.3. My service engine soon light comes on and sometimes will go off. I have ...
A: Sorry if there was some confusion, I mis read your statement and thought you had already replaced ...
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| 1997 Buick Rivera Steering Column | 4/15/2009 | Tim hagan |
Q: I am working on a 1997 Buick Rivera, a guy came to me today with this issue. His steering column ...
A: if the car has been wrecked there is a good chance the steering column has been collapsed, if that ...
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| mode actuator door | 4/13/2009 | Tim hagan |
Q: On a 2004 Yukon do you have the instructions or diagram to replace the mode air actuator. Thanks,
A: Removal Procedure Remove the floor air outlet duct extension (1) from the floor duct (2). ...
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| 2002 GMC Envoy SLT | 4/12/2009 | CAJUNSC/RAMBLER390 |
Q: 2002 GMC Envoy SLT (6 cylinder) – starts fine when cold (for example, first thing in the morning). ...
A: If this is an 02 Blazer Envoy package, with the 4.3L V-6 engine and it cranks but does not start, my ...
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| clutch fan | 4/7/2009 | Tim hagan |
Q: I have a 2003 Envoy that has started sounding like a jet plane. My husband is almost sure it is the ...
A: its a fairly tricky job, mostly because it is a tight fit with the fan shroud in place, if you can ...
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| front differetial seals | 3/31/2009 | Tim hagan |
Q: I'm replacing right-front wheel bearing and diff seal on my 01 gmc suburban. bearing assembly came ...
A: should be able to remove the axle by removing the axle shafts, front drive shaft and the mounting ...
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| gas gauge | 3/29/2009 | Marc Podeszek |
Q: I have a 1983 GMC short box, I have been restoring this vehicle. The gas gauge worked before I ...
A: PROCEDURE A fuel system pressure test is part of several of the Diagnostic Charts and Symptom ...
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