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. Notes: The Trailblazer emerged from an "upscale trim line" of the Blazer, but there's nothing upscale about its transmission problems or its wonky, unpredictable headlights.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
54,027 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.

2002 Chevrolet Trailblazer drivetrain problems

drivetrain problem

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2002 Chevrolet Trailblazer Owner Comments

problem #3

Aug 062006

Trailblazer 4WD

  • Automatic transmission
  • 72,000 miles


2002 Trailblazer was running bad around 34000 miles. Took it to dealership and they had to fix the rear differential and reprogram the 4 wheel drive transfer case. All repairs were under warranty. I am now having the same problems at 70000 miles. Dealership wants to charge about $2000 to fix the problems. Have talked to several other trail Blazer owners and mechanics and it seems that GM has a lot of problems like this, but won't do anything about it.

- Englewood, CO, USA

problem #2

Dec 072004

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 40,000 miles
Contact bought a 2002 trail Blazer in 2004. Contact complained about electrical problems. Brake lights/headlights/ 4-wheel switch, and blower switch went out. On 12-720-04 she started having transmission problems. It started grinding when she put in fourth gear. When she took vehicle to the dealer, they told her that gears were faulty. When she put vehicle in 4-wheel drive, it broke. She had it repaired, and then the headlights went off because the headlight switch burned out. Then she had a new actuator put on it and a month later, she had to have another actuator put in. On 7-20-05 while driving, the 4-wheel drive switch came on, and was switching between 2-wheel drive and 4-wheel drive. Vehicle stopped, and she put it in 4-wheel drive. Went back to the dealer, who told consumer differential failed. Before she could drive home the transfer case module went out. The name of the dealer where she has been taking the car was gillelands at 3019 division street, St. Cloud, mn 56301. In addition to all the vehicle's problems, the sunroof was broken and the sway bar links were loose.

- St. Stephen, MN, USA

problem #1

Nov 052004

Trailblazer 6-cyl Diesel

  • Automatic transmission
  • 50,080 miles
While driving consumer found that there was a hole in the rear axle differential and as a result the vehicle could not be driven. This vehicle had one problem after another. However, on November 25, 2004 while consumer was driving heard a very loud noise. Took the vehicle to dealer, and was told that this time it was the transmission transfer case module.

- Bronx, NY, USA

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