2001 GMC Sierra 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2001 GMC Sierra 2500
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2001 GMC Sierra 2500 Problems4WD Transfer Case Position Sensor/Selector Switch May Fail
The 4WD transfer case position sensor or the selector switch may fail causing the service 4WD message to be displayed.
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.
It is common for the fuel level sensor in the fuel tank read the fuel level incorrectly. The sensor must be replaced to correct the condition. Our technicians recommend having the complete fuel pump module replaced on high mileage vehicles.
2001 GMC Sierra 2500 QuestionsFluid forced out the top of the windshield washer reservoir. (1 answer)
When I activate my washers, fluid is forcibly blown out the top of the reservoir.
I do get fluid onto the windshield but am losing a ton of fluid out of the top of
the reservoir. How do I correct the issue?
the plug gap changes to .040 from .060 with stock and platinum plugs. What are the bet plugs to use in my 6.0 liter engine?
I have a 2001 GMC 1500 4.8l and I am getting 11-12 mpg's on the highway, could this be an 02 sensor? My air filter is new, plugs, wires, and fuel filter are also new.