GMC Sierra 2500 HD Repair and Maintenance

A guide to problems, costs, maintenance and repair for your GMC Sierra 2500 HD

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault. The warranty has been extended on some of these units to 7 years or 70,000 miles.

The daytime running lights are prone to burning out. Our technicians tell us that the light sockets may show signs of heat damage but usually are OK. Always be sure to use the correct replacement bulb for the best life expectancy. The new bulb recommendation for 2001-2003 models is #4114K (trade number).

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I put fluid back in but it shifts hard and on down shift also. And the engine will rev up but truck won't go sometimes, or it won't go into gear. The tranny temp says 168.put new tranny cooler on it cuz a rock went thru it and lost all my fluid.any info will b helpful

Drove truck few mile light stayed on. Started it to drive to mechanic, light went out as expected. Following starts Light stays on truck starts and runs fine. Mechanic checked both batteries, claims they are good. They are Optima red top and about 4 years old. Notice voltage meter in dash seems...

I have put A crate engine into this vehicle and now the transmission will not switch to 4th gear. When driving 55-60 my Rpm's are around 2500-3000. When I left off the gas it acts like it upshifts. But when I apply the gas again it goes right back to high Rpm's.I have read up on this issu...

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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.

Vehicles equipped with a 6.6L diesel engine and dual fuel tanks are being recalled because the transfer pump that moves fuel from the rear tank to the front tank could cause the fuel gauge in show the incorrect fuel level. The engine could stall unexpectedly, increasing the risk of a crash. Dealers will inspect the fuel transfer pump and replace it as necessary to correct this concern. 

All late model vehicles are equipped with a "Shift interlock" system that prevents vehicles with and automatic transmission from being shifted out of the Park position under certain conditions. Some of these vehicles are being recalled because they may have been assembled with a broken park lock cable or a malformed steering column lock actuator gear. Failure of these components can allow the shifter to be moved out of the Park position with the ignition key removed or in the off position. This can cause the vehicle to roll away unexpectedly increasing the risk of injury or a crash. Dealers will inspect the recalled vehicles and replace the steering column as necessary.

 

 

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I started to here a pulsation noise behind my glove box area about every 30 seconds. With my hand I reached under and located the noise against the fire wall. I found a damper that was opening and closing back and fourth. Then found out I have a cabin air filter; changed them out with new ones. Thought that would be the problem, but I still have this damper wanting to pulse back and fourth f...

I don't have a Duramax I only have the 6.0 Liter Vortec engine but it pulls just fine. I love this truck to death!!! I just need to find a solution on how to get better fuel economy and how to fix my cruise control that just went out about a week ago.

Picked up a used 2005 GMC Sierra 2500 HD which was in very good shape. Other than a few cosmetic blemishes, it was respectable. The motor is very strong and has good power, even on steep inclines here in the mountains. I honestly think you could tow just about anything you want with this truck. Plenty of power to do the job. The transmission shifts smoothly, and you barely even notice when it ...

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