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.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
75,900 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.

2003 Chevrolet Trailblazer EXT transmission problems

transmission problem

Find something helpful? Spread the word.
Get notified about new defects, investigations, recalls & lawsuits for the 2003 Chevrolet Trailblazer EXT:

Unsubscribe any time. We don't sell/share your email.

2003 Chevrolet Trailblazer EXT Owner Comments

problem #2

Feb 102011

Trailblazer EXT 6-cyl

  • Automatic transmission
  • 78,000 miles


The contact owns a 2003 Chevrolet Trailblazer ext. While the contact was driving approximately 20 mph, the steering wheel became stiff and extremely difficult to maneuver. The transmission lines leaked an excessive amount of fluid. The vehicle was taken to an independent mechanic where the power steering and transmission lines were replaced at different times. The manufacturer was notified of the failure. The approximate failure mileage was 78,000. Updated 07/08/11 the power steering lines rotted and leaked fluid excessively. The lines were replaced at a cost of $1,000. The transmission lines rotted and leaked fluid and also had to be replaced at a cost of $350. Updated 08/31/11.

- Trumbull, CT, USA

problem #1

Aug 012006

Trailblazer EXT 4WD

  • Automatic transmission
  • 73,800 miles
Trans coolant lines rubbed against cat converter, causing leaks. 4 - 4.5 qts of trans fluid leaked out. Trans overheated and failed on the highway, causing vehicle to stop in an unsafe location. Transmission had to be replaced.

- New Castle , IN, USA

Not what you are looking for?