GMC Repair and Maintenance
A guide to problems, costs, maintenance and repair for your GMC
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GMC ProblemsErratic Fuel Gauge Operation
The fuel level sensor in the fuel tank may fail causing erratic fuel gauge operation. Our technicians tell us that on high mileage vehicles you may wish to replace the complete fuel pump module assembly if this condition occurs.
On certain 2005 - 2007 vehicles, General Motors has provided a special service policy covering the fuel level sensor, agreeing to pay 50% of the repair cost. This coverage extends for 10 years or 120,000 miles from the original "in service" date of the vehicle. Please contact your local GM dealer for more information.
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The upper dash may crack, most commonly on vehicles in warm climates and exposed to a lot of sunlight. The common repair is to replace the upper instrument trim panel. Information on a technical service bulletin or extended warranty is not available at this time.
On vehicles equipped with rear air springs, the air compressor may fail causing the rear suspension to sit low.
GMC Questionsi replaced my heater blower fan and still doesn't work (1 answer)
The old one rumbled for awhile. Then started to make a high pitch noise. Eventually stopped working at all. I put a new blower fan in. There's power to the unit but still doesn't work!
Replaced the starter in my truck after it wouldn't start, but now the transmission is not shifting properly. When I started the truck, it was automatically in reverse, but not sure if shifter was in park or neutral. Gears appear to be off by one position?
Heard a small bang or crack when putting truck in reverse and then reverse was gone and now 1st gear takes too long and uses too many rpm's before switching itself into 2nd gear (truck is automatic), but otherwise truck drives fine so far. Incident occurred yesterday, minimal use of vehicle s...
GMC RecallsBrake Fluid Leaks And Reduces Braking Performance
The front brake caliper piston seals may leak brake fluid, causing braking performance to be reduced. Dealers will inspect the front brake calipers and replace them as necessary free of charge to resolve the concern.
The vehicles were built with an improper mirror combination of no inside rear view mirror and a right hand convex mirror. Vehicles require both side mirrors being flat if no inside mirror is provided. Dealers will install a right hand flat rear view mirror free of charge to resolve the concern.
If the airbag system is in a diagnostic test mode during a crash, the deployment of the frontal airbags and seat belt pretensioners will not occur. Dealers will reflash the system software. In the event the vehicle has had a previous airbag deployment, the airbag sensing and diagnostic module (SDM) will be replaced free of charge.