GMC Repair and Maintenance

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

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GMC Problems

Erratic 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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no air from dash vents

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The Upper Dash May Crack

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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GMC Questions

Replaced the starter, crank but not start, coils not firing,new sensor bcm/pcm (2 answers)

The coils aren't firing at all, everything else working including fuel pump, replaced crank sensor, and cam sensor too. Lost. No codes coming up, all grounds checked

radio doesnt turn on/ no on star or navigation (1 answer)

on star cant diagnose the problem since radio doesn't turn on . already tried shutting car roff locking doors wait 4 min go back in car turn it on still no radio or on star booth green and red on star buttons not working

Battery runs down if not driven every week. New batteries do not solve problem. (1 answer)

When shutting off engine, dash gauges go down as I would expect. 5 sec later they go back up. Something is not shutting off.

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GMC Recalls

Software Defect May Prevent Airbags From Deploying

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. 

Ignition Key May Be Removed Without Transmission Lever Shifted To Park

The ignition key may be able to be removed from the ignition switch without having the transmission shift lever securely in the park position. This could allow the vehicle to roll unexpectedly. Dealers will inspect and if necessary replace the key cylinder lock housing free of charge to resolve the concern.

Tire Placard Has Improper Tire Pressure And Tire Size Information Listed

The tire placard may list the improper tire size and inflation pressure. Dealers will inspect and replace affected certification labels free of charge to resolve the concern.

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GMC Reviews

I purchased a 2007 GMC Acadia.. BIGGEST MISTAKE of my life... 70,000 miles transmission went on it... 75,000 miles timing chain went on it.. 80,000 miles censors went on it... Now timing chain just went again 2 days before I have to go back to work.. I'm a single father raising 2 kids and can't afford this shit.. I am totally screwed...
I bought my 2001 Sierra PU new in Nov. 2000. It's now June 18, 2016 - 317,000+ miles later on original motor. Notes: 1. Replaced radiator at 293,000+ miles. 2. Replaced transmission at 238,000 miles 3. Replaced alternator at around 275,000 miles. 4. Fuel pump - worst part on the truck. I've replaced 4 times at least, almost $700 a pop. It's in a funky location so it's the labor of...
I've had the vehicle for six months. It just went through its first inspection and it only needed tie rods. I consistently have check engine light issues with the gas cap and others that I am unaware of however the truck runs great. I recently installed an "innovative" power performance chip and you can definitely feel the boost . Has anyone installed a performance air intake system, if so i...

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