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:
No data
Average Mileage:
189,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2003 Chevrolet Trailblazer electrical problems

electrical problem

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2003 Chevrolet Trailblazer Owner Comments

problem #1

Aug 262015

Trailblazer LT 4.2L

  • Automatic transmission
  • 189,000 miles


There is an annoying an intermittent "Unknown Driver" flag that comes up on my display if I accidentally hit seat position settings on the door or it decides to act up. When this situation occurs it locks out all of the systems such gauge cluster, door locks, windows and etc.. Most of the time the truck won't start but it has done this while running and could not roll up the widows prior to an oncoming rain shower!! Good thing is that it decided to reset a few minutes after, other times I had to disconnect the battery. GM with their electrical problems. They make the best engines money can buy and are a on the cutting edge but they still haven't go a hold some of age old problems. I know things fail but it shouldn't be like this.

- , Randallstown, USA

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