GMC Cars & Trucks - Recent Questions, Troubleshooting & Support


dead battery --boost vehicle and either turn off vehicle or start it --or if cant boost it theirs a plug under ignition switch on column insert a small screw driver or something similar and pushrelease and turn key

GMC Cars &... | Answered 3 hours ago


By removing the dash panel on the passenger side you will have access to the blower motor. Just beside there is kind of slide that has a screw holding it.
remove the screw of the little door you should see the cabin's filter remove it and replace the new one.

Hope it helps.

GMC Cars &... | Answered Yesterday


You describe a brake problem of a master cylinder leak.
But the vacuum booster could interfere with the application of brake pressure on the master cylinder.
For a firm brake pedal and holding a leak inside the brake booster.
and rotor, front pad, drums, and brake band have to be in very good condition.

Hope it helps.

GMC Cars &... | Answered Yesterday


All of the functions on the seat are controlled by "one" fuse. Forward, back, up, down and recline, If one is inop. The whole seat bottom needs to be replaced. Now if you hear an audible bump noise when you rapidly flip the recline switch back and forth, you may be able to free it up by working it and see if that helps to free it up for sometime. When those motors sit in one position day after day month after month without being moved, they tend to "stick" but if you can't get it to free. The bottom of the seat will need to be replaced. Those are not cheap by no means and it would be a good idea to let a professional do it unless you are up to figuring out where all the brackets and nuts and bolts go and the proper wire routing because it is very tedious work. Not trying to scare you from doing the job but just stating a fact. But I hope you get the issue corrected. Jesus loves you, John 3:16-17 (KJV) :o)

2011 GMC Terrain | Answered 2 days ago


under vehicle connected to the exhaust system after exhaust manifold in front of and after cat converter look like spark plugs with wires on top

GMC Cars &... | Answered 2 days ago


No spark to the spark plugs or no fuel pressure . If the the starter spins the engine over fast enough it's not the battery . Doesn't sound like you know a whole lot about car's . Do yourself a favor an take it to a qualified repair shop . Before you buy alot of unneeded parts .

1994 GMC Sonoma | Answered 2 days ago


remove seat bolts at floor seat tracks and remove seat remove straps and brackets disconnect fuel line and filler coupling

GMC Cars &... | Answered 3 days ago


The actuator will not be on the front differential or drive line, it will be on the transfer case, which is mounted behind the transmission. Follow the front drive shaft back from the front differential, and the component at the rear of the driveshaft is the transfer case. That is where four wheel drive is engaged/disengaged.
I'm not familiar with your vehicle, but if you have a separate lever to engage 4wd, there will not be a fuse for the actuator - it is a manual system. If the 4wd is selected electrically, check that all wiring and connectors on the transfer case are in good condition.

1990 GMC... | Answered 3 days ago


Sorry but those are not free you must buy the manual set, it is about $300.00 You can try finding a used set on eBay.

GMC Cars &... | Answered on Aug 13, 2018


usually the underneath connector is just loose .try to remove the connector and clean .if the same problem occurs check the for the ground and blown up fuse

GMC Acadia Cars... | Answered on Aug 11, 2018


Sounds like the magnetic clutch on the compressor may be defective or have an excessive air gap between the drive and driven plates (gap increases with engine temp)..

2009 GMC Acadia | Answered on Aug 10, 2018


  • A servo is a mechanism, usually a motor of some sort, that drives another mechanism. On a passenger aeroplane, for example, the control surfaces are too difficult for the pilot to operate because there is so much wind pressure against them, so they use hydraulic servos to move the elevator, flaps etc.
  • On a car, the drive by wire throttle control is a servo, which is electronically controlled by the computer, depending on the throttle position under the driver's foot.
  • In effect, the power steering ram on a car is also a servo, which is powered by the p/s pump, and controlled by the valves in the steering column.
  • On a smaller scale, the air conditioner has servos that open and close the relevant air duct flaps when the dashboard controls are shifted to control the flow of air in the car. Please note that on older cars, and some new ones, these flaps are not controlled by servos but by cables.
  • The remote controlled central locking on a car has servos in the doors that open and close the door locks when the remote button is pressed. On some cars these door lock servos are small electric motors, on others they use vacuum operated pistons, also called servos.
  • Hope this answers your question!

1999 GMC Jimmy | Answered on Aug 10, 2018

Not finding what you are looking for?
GMC Logo

59,111 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

2004 GMC Envoy
2004 GMC Envoy

2,167 Questions

2000 GMC Jimmy
2000 GMC Jimmy

1,326 Questions

2002 GMC Envoy
2002 GMC Envoy

1,361 Questions

2003 GMC Envoy
2003 GMC Envoy

1,323 Questions

1997 GMC Jimmy
1997 GMC Jimmy

1,099 Questions

Top GMC Experts

Marvin
Marvin

Level 3 Expert

81400 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...