GMC Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC


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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On vehicles equipped with rear air springs, the air compressor may fail causing the rear suspension to sit low.

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.

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Truck died rollin down the rd. Turned ignition off and when turned back on didn't hear the fuel pump kick on before turning over as I usually do...replaced fuel pump...no power. Figured it must be the fuel pump sending unit on the assembly. Replaced it. ...still no power. Fuses good. Wiring a...

My battery was recently changed. Never had problem with air. Now My air conditioning blows cool air in back on feet and defroster but not face. I tried taking battery off to reset. Can you please help me not sure what problem is.

This vehicle has a 6 liter engine & 4 spd. auto trans., has 164,000 mi. on it. I purchased it with 75,000 from a dealer. Since that time I have had to replace the flywheel 3 times and it needs it again. The last time @ 137,000 mi. the repair shop installed a "spacer" (which it didn&...

See More Questions 5363

The ignition switch actuator can bind causing the ignition switch to stick in the "start" position. If this were to occur the actuator can unexpectedly release, cause the ignition switch to snap back into the "Accessory" position. This would cause the engine to turn off with an associated loss of brake and steering power assist. If these conditions were to lead to a crash the airbags may not deploy as expected. Dealers will inspect and replace the ignition lock housing as necessary to correct this concern.

Certain trucks are being recalled because the rear axle shaft may not have been properly heat treated prior to vehicle assembly and could fail while driving. If this were to occur a rear wheel could separate from the vehicle, increasing the risk of a crash. Dealers will inspect and replace the affected axles to correct this concern.

These vehicles are being recalled because the headlamp driver module (HDM) can overheat and fail. This will cause the headlights and daytime running lights to stop working. Loss of this lighting will affect the ability of the driver to see the road and reduce the vehicle's visibility to oncoming vehicles, both of which increase the risk of a vehicle crash. The remedy for this problem is still under development and not yet available.

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My In-Laws bought the beautiful van off the showroom floor at the Cadillac/GMC dealership. I had a family of four and they adopted a little girl four years older than my oldest. With all my energy, I was always borrowing the van from my dad to take all the kids to the beach, the zoo, to parks. As the kids grew older, this was the perfect automobile for every adventure, including concerts at Gal...

Dash light sometimes fail to come on at night. Radio light blinks. A/C switch only worked on high.

White paint is peeling down to the primer in large flakes on the hood, top, and right hand passenger door.

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