Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


definitely annoying
Typical Repair Cost:
No data
Average Mileage:
105,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2002 GMC Sierra 2500 drivetrain problems

drivetrain problem

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2002 GMC Sierra 2500 Owner Comments

problem #1

Nov 112013

Sierra 2500 SLE 6.6L

  • Automatic transmission
  • 105,000 miles


Unknown condition/situation. Under 40 degrees outside temperature, at 15-20 mph and 25-32 mph a high pitched whine which will increase in pitch until the upper end of the range where it will abruptly cutout. The whine is not above my hearing range, but actually stops. It will not repeat in 3rd gear or overdrive. Temperatures generally above 40 degrees, it will not whine even if the engine is cold. Have had the universal joints replaced 2-3 times and now with grease fittings, and greasing them. Cannot currently track down the sound or cause for the sound.

- , Roswell, NM, USA

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