2001 GMC Sierra 2500 HD Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2001 GMC Sierra 2500 HD
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2001 GMC Sierra 2500 HD ProblemsSpeedometer or Other Instrument Panel Gauge May Work Erratically
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.
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 4WD transfer case encoder motor position sensor or the selector switch may fail causing the service 4WD message to be displayed. Fault code(s) stored in the transfer case control module will be of assistance in determining the exact fault causing the message to be displayed.
2001 GMC Sierra 2500 HD QuestionsMy. Ignition is turning over but not saying anything.the battery is good. (1 answer)
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...