Print this page 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.


pretty bad
Typical Repair Cost:
Average Mileage:
130,511 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (2 reports)
  2. non blow #8 atc fuse removed and replaced after 2 minutes ok (1 reports)
2002 Chevrolet Trailblazer drivetrain problems

drivetrain problem

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2002 Chevrolet Trailblazer Owner Comments

problem #3

Jan 212011

Trailblazer 4.2L V6

  • Automatic transmission
  • 123,500 miles


Truck not shifting out of 2 wheel drive mode then indicator light on switch went out. This had me checking fuses and strangely enough all were still good. Auto beef was a huge help with advice on removing a fuse #8 (ATC) for a 2 minute hold time. Had a similar occurrence with a 2002 Envoy only the envoy shifted intermittently and to random drive modes ie.,2WH,4WH,4WL.2WH,and N.This was especially bad when the vehicle went into neutral. Replaced the selector switch first to no avail then the transfer case motor (TCM). Selector switch was $35.00 then $160.00 for the rebuilt TCM. Problem resolved upon removing and then reinserting the unblown fuse. I'm told this wakes up the computer and all is well so far. This is just a confirmation of a problem / fix for a similar problem another client had. Hope this saves someone else both expense and hassle.

- , Franklin, MA, USA

problem #2

Dec 202010


  • Automatic transmission
  • 145,032 miles

Shifted 2002 Trailblazer, wouldn't go out. Had to pull fuses for it to transfer back to 2wd. Yesterday, hit a bump going 10 mile an hour it switched itself into 4 hi. Turned it off and back on it went back to 2wd. The switch never moved. Today going 75 mph down the interstate the trailblazer service 4 wheel drive light came on and then it transferred to 4 high. Pulled over to side of road and took me 1/2 hour to get it back into 2 wheel drive. No open recalls on my vehicle. Very angry this is bull!

- , Collbran, CO, USA

problem #1

Oct 282010

Trailblazer 4.3L

  • Automatic transmission
  • 123,000 miles

I makes me mad that Chevrolet would not help to repair the problem even though there was a recall on the power train: transfer case (4 Wheel Drive) in Oct 2001. They could only tell me that the recall is at the deadline of Nov. 20, 2008/ 100,000 miles. Even though the recall VEHICLE DESCRIPTION: SPORT UTILITY VEHICLES EQUIPPED WITH 4WD. THE CALIBRATION OF THE TRANSFER CASE CONTROL MODULE COULD CAUSE INSUFFICIENT HIGH SPEED GEAR ENGAGEMENT. THE CONSEQUENCES: IF THE GEAR IS NOT ENGAGED, THE VEHICLE CAN ROLL WHEN THE TRANSMISSION IS IN "PARK" AND A CRASH COULD RESULT WITHOUT WARNING.

I think that the company should fix the problems that occurs on a recall NO matter when it happens or how miles is on a vehicle it should be covered at anytime. A RECALL IS A RECALL NO MATTER WHAT TIME FRAME THERE IS OR HOW MANY MILES IT IS STILL CHEVROLET PROBLEM THAT STILL OCCURRING. I have only owned two chevy vehicle all my life and this is the worst.

- , Camdenton, MO, USA

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