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.


really awful
Crashes / Fires:
2 / 3
Injuries / Deaths:
0 / 0
Average Mileage:
18,286 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 electrical problems

electrical problem

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2002 Chevrolet Trailblazer Owner Comments

problem #7

Aug 292006

(reported on)


  • miles


2002 Chevrolet Trailblazer electrical fire in the fuse box under the hood and has been replaced. Lower ball joints had to be replaced because they wore out the tires.

- Hanceville, AL, USA

problem #6

Sep 202004

Trailblazer 6-cyl

  • Automatic transmission
  • 125,000 miles
2002 Trailblazer acted like transmission going out, took to dealer they upgraded computer. Front right low beam wired burned and melted, took to dealer they wanted to charge $250 plus labor for light assembly when all it needed was a piggy plug, bought plug at Napa and fixed myself. Never have had two back lights working at same time... cant take to dealer to get the recall work because it seems that these vehicles are using a "weak" oil pump and my Trailblazer has been in shop for last month or more waiting to be fixed. The weak oil pump caused damage to rod bearings, main bearings, and crankshaft. GM says out of warranty and my customer service specialist said "I'm sorry" about 10 times but she was still closing my folder and marking dissatisfied. She can't help me because I'm out of warranty. I hate this vehicle. I have found quite a few recalls but can't do most because its in the shop. I never got any recall notices.

- Longville, LA, USA

problem #5

Jul 302002

Trailblazer 6-cyl

  • Automatic transmission
  • 3,000 miles
Engine stalls ; engine hesitates; engine trembles.

- Austin, TX, USA

problem #4

Aug 222002

Trailblazer 4WD

  • miles


Wiring harness burned up. Caused damage to control panel, dash, computer system. Entire vehicle gutted to replace wiring. A door panel was broken in process. Several rattles now exist. We were told there was no way of knowing if electrical problem would occur again. GM agreed for repurchase. However, they delayed procedure so that 0% financing can not apply. Also wanted us to pay out of pocket, buy back amount said we would be reimburced, but would not put it in writing.

- Fort Wayne, IN, USA

problem #3

Oct 252002

Trailblazer 4WD

  • miles
The first time I had problems was about a month ago when the check engine light came on. I brought the vehicle in to lynch service department and it was taken cared of that same day. On 10/25/2002 my car completely shut down and it would not start for me at all. I had my vehicle towed to gillespie Chevy dealer service department and as of today 10/29/2002 my vehicle is still there. I was told that it is an electrical problem but that was all I was told. Now I'm just sitting and waiting.

- Chicago, IL, USA

problem #2

Jun 212002


  • miles
While driving heard popping noise and notice undercariage caught on fire, and within minutes car exploded. Dealer was notified. Resulted in an accident.

- Reston, VA, USA

problem #1

Feb 132002


  • Automatic transmission
  • miles
Consumer started vehicle and shifted to reverse and suddenly smoke came from under the hood, consumer could not get out of vehicle since doors locked upon starting vehicle. She was able to get out through rear passenger door that had not been shut properly. Dealer determined that battery cables shorted out, and shut down electrical system. Dealer was exchanging vehicle.

- Powell, TN, USA

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