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:
82,750 miles
Total Complaints:
4 complaints

Most Common Solutions:

  1. not sure (3 reports)
  2. replace module in passenger door (1 reports)
2002 Chevrolet Trailblazer windows / windshield problems

windows / windshield problem

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2002 Chevrolet Trailblazer Owner Comments

problem #4

Mar 222010

Trailblazer 4.2L

  • Automatic transmission
  • 115,000 miles


Has anyone else had the drivers door switch go bad where only the drivers door window doesn't work, I put the scan tool on and it says the switch is working, and I have hot wired the wiring to the regulator and that works, but when you plug the two together there is nothing. I'd buy a switch but the scan tool says it works, so it appears to be wasting $250.

- , Ashland, WI, USA

problem #3

Jun 272008

Trailblazer XLT 4.6L V6

  • Automatic transmission
  • 86,000 miles

Window regulators have gone bad in both back windows but can't find parts locally. However, been quoted $100 a piece plus $55.00 each labor to put in, shop tells me 8th one they've done. Should be recalled if you haven't had this problem yet just wait it's coming. I already replaced the driver window one a year ago coat me $120 for that one.

- , Kingsttree, SC, USA

problem #2

Nov 252003

(reported on)


  • 60,000 miles

I think GM has a number of problems in their multiplexing modules for the CAN communication between modules. The truck has never worked right from the beginning on the electrical operations as various "quirks" have occurred. As a design engineer in electrical CAN systems, I have noticed this over the past 2 years with the truck.

GM should step up to the plate and address the problem instead of burying with the customer and having customer absorb costs of their development. Other people must have the same problem!

- , Youngstown, OH, USA

problem #1

Apr 032008

Trailblazer LS 4.2L

  • Automatic transmission
  • 70,000 miles

Passenger window and power door lock will not work. all other 3 windows and power door locks work ok. harness plug between door and truck frame appears to be in good condition.

- , Sussex, WI, USA

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