Print this page 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.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
153,333 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Chevrolet Trailblazer transmission problems

transmission problem

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2003 Chevrolet Trailblazer Owner Comments

problem #3

Dec 012011


  • Automatic transmission
  • miles


2003 Chevrolet Trailblazer. Consumer writes in regards to fuel tank and rust holes the consumer was informed the fuel tank was leaking, due to rust holes and pitting. There was also a defect with the filler tube. The consumer was informed the fuel pump would need to be replaced due to the other problems with the fuel system. Also, the transmission cooling lines were replaced, due to a leak.

- Washington, DC, USA

problem #2

Nov 122007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 60,000 miles
I'd driven 60 miles to destination. 1/2 hour later went out to Trailblazer. There was a large puddle of transmission fluid under the vehicle and a trail of drips leading up to it. Mechanic determined the line rubbed on catalytic converter and wore a hole in it. The fluid sprayed all over under the vehicle. He said it was amazing there wasn't a fire because of how flammable it is and how hot the converter gets. It was down 4 quarts of fluid. He spliced out the worn line and used a coupler to fix it and move it away from the converter.

- Harris, MN, USA

problem #1

Mar 162008

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 400,000 miles
Transmission line leaking. Cooling line rubbing on catalytic converter. Transmission fluid leaking on converter. Smoke could be seen. Possible fire issue. Transmission failure possible if fluid level too low. Line was in contact with converter. Remedy was to have all lines replaced so they were routed away from converter.

- Charlton, MA, USA

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