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:
72,500 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 fuel system problems

fuel system problem

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2003 Chevrolet Trailblazer Owner Comments

problem #4

Dec 022007

Trailblazer 6-cyl

  • Automatic transmission
  • 115,000 miles


My check engine light came on. After linking to the computer I had a code # P0442. After I, and my mechanic inspected the vehicle, we found that the gas tank was cracked and leaking. I had to replace the faulty gas tank, for an expensive fee. I called Chevy, and to sum it up, I was left to work this problem out on my own, with no financial help from GM.

- Townsend, DE, USA

problem #3

Jul 012007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 85,000 miles
Strong gasoline smell in passenger compartment. Smell is strongest underneath vehicle fuel tank. Have not yet had vehicle serviced to determine root cause.

- Frostburg, MD, USA

problem #2

May 182007

Trailblazer 6-cyl

  • Automatic transmission
  • 90,000 miles
Service engine light came on. My private mechanic found it to be code P0440 indicating the fuel evaporation system had a problem. Initial inspection found nothing but upon performing a smoke test of the fuel system, the fuel inlet nozzle on the fuel tank was found leaking. Only fix was to replace the tank. Total cost was $2200. I notified GM and was told they cannot do anything since the vehicle is out of warranty. Fuel tanks should not be leaking, especially when they are only 4 years of age. Many other similar complaints on this website show this to be a common problem with this vehicle. A recall to check all fuel tanks should be done before someone is killed over this poor design/quality issue.

- Concord, CA, USA

problem #1

Sep 202003


  • miles
2003 Chevrolet Trailblazers 3-4 weeks ago my service engine soon light came on and I took it to the dealership who showed me a leak at the junction of the gas tank and the hose from where you fill up the tank. The service man tightened the clamp. The light came on again and I took the TB back and was told the connection was cracked and that the tank had to be replaced. I haven't been in an accident, haven't run over anything etc to cause this. I am having the tank replaced--

- Fayetteville, AR, USA

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