GMC Repair and Maintenance
A guide to problems, costs, maintenance and repair for your GMC
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GMC ProblemsAir Compressor for Rear Air Springs May Fail
On vehicles equipped with rear air springs, the air compressor may fail causing the rear suspension to sit low.
first the oil pressure gauge went. then the speed. then the volts and finally the whole dashboard. not cheap to fix and it has been something i heard that happens with this vehicle from alot of mechanics. it is a bad problem cuz u have no idea what temp your vehicle is at. the speed you are going. if the vehicle will overheat or not. if you will run out of gas. or if the volts are enough to keep vehicle running. had to park it for 2 1/2 months...
A rattling noise may develop from the AC belt tensioner. This can be caused by an internal fault with the AC compressor, AC performance may also be diminished when this occurs. Our technicians tell us that replacing the ac compressor will commonly correct this concern.
GMC QuestionsI can pull out the keys and the car keeps running. (1 answer)
And there have been times when I pull out the keys, think the car is turned off and it's not because the battery ultimately dies and the next morning I have to jump my car (if there's another around).
Vermin entered the heater ducts over the winter and died there. How much will it take to disassemble the heating ducts to get them out? Is there danger of compromising the air bags with this repair?
GMC RecallsFront Suspension Control Arm Welds Fail
The front suspension upper control arms may have welds that are not sufficient, resulting in separation of the arm from the bushing. Dealers will replace both the left and right upper control arms and realign the vehicle suspension free of charge to resolve the concern.
The tensioner cable for the driver's seat belt may be positioned such that the driver slides over it, resulting in fatigue of this cable. This could cause it to separate from the seat belt. The driver may not be properly protected in a crash if this happens. Dealers will modify vehicles to prevent the tensioner from being damaged, and will repair any tensioner that has already been damaged free of charge to resolve the concern.
The driver's frontal air bag may not inflate properly during the second stage deployment, resulting in increased risk of occupant injury. Dealers will replace the driver side frontal air bag module free of charge to resolve the concern.