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.


pretty bad
Typical Repair Cost:
Average Mileage:
80,333 miles
Total Complaints:
3 complaints

Most Common Solutions:

  1. not sure (2 reports)
  2. replace a/c low pressure hose (1 reports)
2003 Chevrolet Trailblazer AC / heater problems

AC / heater problem

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2003 Chevrolet Trailblazer Owner Comments

problem #3

May 212009

Trailblazer EXT V6

  • Automatic transmission
  • 119,000 miles


My Trailblazer AC blows war air; the outside temp is reading 50 degrees so the ac wont turn on

- , Vineland, NJ, USA

problem #2

Jul 062007

(reported on)

Trailblazer Extlt 3.2L V6

  • Automatic transmission
  • 50,000 miles

When I purchased the TB in '06, it was fall, so there was no use testing the A/C as it was quite chilly out. Well, now that it is summer and hotter than hell, I NEED MY A/C!! Now, I find out that it is the A/C low pressure hose, it cost about $400 just for testing it and looking for the problem, not fixing it! At the same place I had it checked, they said it would be around another $1000 to have it fixed, parts and labor. I have talked to several different auto repair shops to get estimates and they said that they are seeing more of this same problem in the 2003 TrailBlazer around here, so why isn't this part being recalled if there are so many problems with it? another thing that sux is that the extended warranty will not cover it!!!

- , Huron, SD, USA

problem #1

Aug 202007

(reported on)

Trailblazer V6

  • Automatic transmission
  • 72,000 miles

The A/C is cold and works, but sometimes just blows warm air. I hate this car and all its many many probs!! Its a lemon from hell and it also has bad luck!! I have had this car for less than 3 months. I called the place I bought it from and they are going to fix it. They are showing me 2007 Impalas tomorrow.

- , Sulphur, OK, USA

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