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: Carrying the not-so-proud traditions of its 2002 predecessor, the 2003 has a handful of instrument panel malfunctions that can leave you guessing your speed, engine temperature or how much gas is left in the tank.


fairly significant
Typical Repair Cost:
No data
Average Mileage:
104,109 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2003 Chevrolet Trailblazer AC / heater problems

AC / heater problem

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2003 Chevrolet Trailblazer Owner Comments

problem #1

Sep 062010

Trailblazer LT V6

  • Automatic transmission
  • 104,109 miles


Faulty rear module for rear heat on passenger rear. At the beginning, when I turn it up, it will wait for about half an hour before it comes out. Progressively, it starts making a clicking sound every 2 seconds or so for about 15 minutes. Now it stops completely. No more air on the back. Continuous replacement in order to have heat on the back of truck created a new problem with the front heat as well that I have to keep replacing from now and then..

- , Pittsburgh, PA, USA

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