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About Tim hagan
(Top Expert on this page)

Expertise
Can answer most questions on GMC and Pontiac or similar body styles throughout GM

Experience
Most experienced in braking systems, steering, suspension, vehicle stability systems and electronic steering

Organizations
ASE

Education/Credentials
Gm training, ASE certified and State of Michigan Certified

   

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

SubjectDate AskedExpert

p0452 error code?7/7/2009Tim 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 ...
Transmission solenoid7/7/2009Tim 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 ...
ABS light7/5/2009Tim 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 ...
Chevy running hotter than usual7/2/2009Tim 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, ...
AC BLOWER7/2/2009Tim 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 ...
2004 GMC 2500HD ENGINE MISFIRE7/2/2009Tim 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 ...
transfer case 2002 safari van awd7/1/2009Tim 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 ...
air conditioner /Rear Right back side car6/29/2009Tim 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 ...
Olds air shock6/15/2009Tim 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 ...
Olds air shock6/15/2009Tim 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 ...
98 gmc jimmy6/13/2009Tim 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 ...
Power steering line leak6/12/2009Tim 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 ...
replace and repair master cylinder for 2000 gmc sierra6/11/2009Tim 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 ...
blowing ecm fuse6/8/2009Tim 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 ...
Leaking Antifreeze6/6/2009Tim 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 ...
Wiper harm removal5/28/2009Tim 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 ...
87 K5 Blazer stalling5/28/2009Tim 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 ...
2002 GMC Envoy5/27/2009Tim 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 ...
95 buick won't start5/27/2009Tim 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? ...
2006 GMC Sierra A/C blower5/20/2009Tim 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 ...
1999 GMC sierra 1500 Z71 pick up new body5/15/2009Tim 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 ...
1998 Saturn SL1 Rear Wheel Cylinders5/15/2009Tim 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 ...
1995 GMC Yukon won't start after reaching operating temp5/12/2009Tim 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 ...
buick century fuel guage problems5/8/2009Tim 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 ...
Heater Core5/8/2009Tim 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 ...
'07 GMC2500HD bumps & bounces between 40-555/6/2009Tim 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, ...
remove driver side door panel for 2007 Denali4/29/2009Tim 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 ...
Changing trans. fluid4/28/2009Tim 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 ...
Electrical or computer problem4/25/2009Tim 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 ...
Spare Tire Removal4/24/2009Tim 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 ...
99 sierra hissing noise4/23/2009Tim 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 ...
2001 Ponitic Bonneville dash lights don't work4/18/2009Tim 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 ...
Fuel Level sensor!4/18/2009Tim 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 ...
Purge vent valve4/16/2009Tim 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 ...
1997 Buick Rivera Steering Column4/15/2009Tim 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 ...
mode actuator door4/13/2009Tim 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). ...
2002 GMC Envoy SLT4/12/2009CAJUNSC/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 ...
clutch fan4/7/2009Tim 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 ...
front differetial seals3/31/2009Tim 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 ...
gas gauge3/29/2009Marc 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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CAJUNSC/RAMBLER390Tim hagan 

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