Print this page Notes: The 2002-2007 Chevrolet Trailblazer is known for many things, but perhaps it is most famous for its faulty fuel gauge.

This gauge flip-flops more than a politician during election season. Some report that the gauge says "empty" after a fill-up, while others report the gauge says "full" when they're running on fumes. Either way, there's one thing everyone seems to agree on: the darn thing is just wrong.

Following hundreds of complaints and a few accidents allegedly caused by the malfunction, the National Highway Traffic Safety Administration (NHTSA) opened an investigation into the issue in May 2011. Unfortunately for frustrated owners, no recall has been announced.


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
61,433 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.

2005 Chevrolet Trailblazer exhaust system problems

exhaust system problem

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2005 Chevrolet Trailblazer Owner Comments

problem #4

Jul 292011

Trailblazer 4WD 6-cyl

  • 99,000 miles


Started smelling exhaust fumes in the cabin of the truck. Shortly after this began, the truck exhaust started getting louder. Dealer diagnosed as cracked exhaust manifold. Cost over $1,000 to repair. Dealer would not warranty.

- Grand Island, NY, USA

problem #3

Jan 012009

Trailblazer 6-cyl

  • 29,000 miles
Just after purchasing the vehicle on December 29, 2008, I noticed the engine has accelerated and the car surges forward when stopped. If I do not keep my foot on the brake, there is a high potential of surging into the back of a vehicle in front of me. An accident has almost happened many times. I have had it looked at by the dealer I purchased the vehicle from on February 4,2009 and was told there is not a problem. It most likely will "not be a problem" until I rear end someone while stopped. This continues to happen on a regular basis, a year and a half later. I was not aware I had an opportunity to report until the Toyota recall happened. I have been living with it, anticipating the surge every time I am at a stop.

- Porterville, CA, USA

problem #2

Sep 152008


  • 63,631 miles
When I bought this vehicle 2 months ago, I thought the gas gauge was empty upon purchase, as it was a used car, but no it is the fuel system problem that everybody keeps mentioning. I fill the vehicle, and it only shows a half tank. Then it will go to empty with the warning light coming on. As someone who travels a lot, and for long distances, this is a horrible defect. The exhaust manifold has become loud, which means another expense on a 2005 which shouldn't be happening.

- Trenton, ME, USA

problem #1

Mar 152008


  • 54,100 miles
The contact owns a 2005 Chevrolet Trailblazer. Whenever the contact started the vehicle, she noticed that the exhaust system was very loud. The vehicle was taken to a local mechanic shop and they stated that there was a crack in the exhaust manifold. The vehicle was also diagnosed by the dealer for the same failure. The contact did not notice any differences beforehand. The current mileage was 68,239 and failure mileage was 54,100.

- Nallen, WV, USA

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