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.


really awful
Typical Repair Cost:
Average Mileage:
96,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. replace front differential (1 reports)
1999 GMC Yukon drivetrain problems

drivetrain problem

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1999 GMC Yukon Owner Comments

problem #1

Jul 082008

Yukon Denali 5.8L

  • Automatic transmission
  • 96,000 miles


with about 96K I went on a road trip in the vehicle---I'm driving along doing fine had driven about 10 hours when I heard a really high pitch squeal coming from the front of the vehicle--As I slowed down so did the squeal--and when my speed increased so did the noise--I stopped and looked at the vehicle but could not see any obvious sign of danger I began driving again but only at about 35 MPH--luckily didn't have much farther to go at that point. after reaching my destination I had the vehicle towed to the dealer and he told me that front differential was bad due to a faulty service I had just paid for on the vehicle before I left for the trip--so he suggested that I replace both front and rear differential for well over 2000. it stopped the noise--but now both of them have slight leaks--of course they are no longer under warranty......

- , L'ville, KY, USA

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