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.


fairly significant
Typical Repair Cost:
No data
Average Mileage:
131,584 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. not sure (2 reports)
2002 Chevrolet Trailblazer engine problems

engine problem

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2002 Chevrolet Trailblazer Owner Comments

problem #2

Dec 012010

Trailblazer LT 4.2L

  • Automatic transmission
  • 121,167 miles


I have a 2002 trailblazer that up untill now has been great. Now when i start the car you hear this really loud fan. My truck has no balls and when i turn the heat on it sends the idle up and down till it stalls. Someone pleaseeeeeeeeeeeeeeeeee help me i dont know what the problem is and its driving me nuts!!!! if you have a solution to my problem please let me know!

- , Windsor, Ontario, canada

problem #1

Jul 302010

Trailblazer LS 4.2L 6 cyl

  • Automatic transmission
  • 142,000 miles

this problem also has the service engine soon light on, tune up has been done. has anyone else had this problem? also had transmission overhauled, replaced an overpriced electronic fan clutch, plus interior trim pieces falling off. I'm a big gm fan but wouldn't own another damn trailblazer as long as i live.

- , Quicksburg, VA, USA

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