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:
121,500 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. not sure (2 reports)
2003 Chevrolet Trailblazer engine problems

engine problem

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2003 Chevrolet Trailblazer Owner Comments

problem #2

Nov 302012

Trailblazer LT 4.2L I6

  • Automatic transmission
  • 143,000 miles


well i have the check engine code po440. i was told i most likely have a small evap leak but i still dont know

- , Elizabeth, PA, USA

problem #1

Jan 012010

Trailblazer V6

  • Automatic transmission
  • 100,000 miles

Third compalint I've filed w/ the same car!!!! Seriously considering taking a loss just to get rid of it!!!!!! My service engine light has been on for months now. The code is P0440 ... I have seen alot of complaints w/ '03 models w/ this. Could be a number of things like the filler neck, a crack in a hose or gas cap. Mine IS NOT the gas cap. If so many people are having the same issue YOU should have to fix it. Your cars are defective and I'm losing money by owning one!!!! Never again!

- , Chattanooga, TN, USA

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