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:
1 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
38,759 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 #4

Nov 252008

Trailblazer 4WD

  • 122,035 miles


1. transfer case seized - 4WD failure while driving 2. fan clutch failure - vehicle does not operate properly in a number of ways.

- Markham, 00, USA

problem #3

Jul 302002

Trailblazer 6-cyl

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

- Austin, TX, USA

problem #2

Nov 072003

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 30,000 miles
Had to replace the 2 wheel drive/4 wheel drive selector switch three times. Component fails without warning. The day this vehicle went into service the selector switch failed delaying delivery.

- Beacon Falls, CT, USA

problem #1

Dec 312001

(reported on)

Trailblazer 4WD

  • Automatic transmission
  • miles
Power mirrors malfunctioned; mirrors will automatically move themselves. Dealer could not duplicate. Service 4WD light displayed on cluster and 4WD switch is inoperative, vibration in floorboard at 55-60 mph wheen pressing gas, dealer could not duplicate, small dark fluid leak from rear of vehicle, dealer replaced differential gasket.

- Raleigh, NC, USA

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