NHTSA — Power Train: Driveline: Differential Unit Problems

4.3

definitely annoying
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
26,333 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

1999 Pontiac Trans Am drivetrain problems

drivetrain problem

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1999 Pontiac Trans Am Owner Comments

problem #3

Dec 152005

Trans Am

  • Automatic transmission
  • miles

A D V E R T I S E M E N T S

I bought my 1999 Pontiac Trans am brand new, 8/23/99. It now has 31,310 miles and both my door panels have cracks, about 1/4 way back. Also, I had a growling noise in my rear bearings and I had to have a new pinion bearings, carrier bearings, ring and pinion gear set installed. I was told by the technician where I took it to be fixed it looked like it had been driven hard. My car has been driven approx. 10 miles a day everyday since I got it and has been only once, to louisville, about 100 miles away. It has been in the garage every night since I've had it.

- Indianapolis, IN, USA

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problem #2

Aug 182004

Trans Am 8-cyl

  • Automatic transmission
  • 79,000 miles
Rear differential whining unbearably loud. Took to local GM dealer to diagnose, they say it needs replaced. Warranty I bought is inspecting to see if they are going to pay for it. This affect's the comfort, reliablity, and safety of this car. I will update when more info is recieved from the GM dealer. Upon further investigation online, this is has happened to a lot of other LS1 powered F-body owners with this GM rear differential.

- Prattville, AL, USA

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problem #1

Jun 181999

Trans Am

  • miles
No summary listed for above vehicle.

- Eldersburg, MD, USA

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