hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
64,391 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 EXT fuel system problems

fuel system problem

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2003 Chevrolet Trailblazer EXT Owner Comments

problem #6

Jul 212012

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 185,000 miles


The contact owns a 2003 Chevrolet Trailblazer ext. The contact stated there was a massive fuel leak coming from under the vehicle. The contact noticed the leak as the vehicle was idling. The contact turned the vehicle off and had it towed to the dealer. The contact stated that the vehicle was at the dealer but he had not spoken with the dealer to determine the diagnosis of the failure. The manufacturer was notified who advised that when the dealer inspected the vehicle, then they would contact him. The contact filed a complaint with the manufacturer. The VIN was unknown. The failure mileage was 185,000. The consumer stated the fuel tank, fuel mount, and fuel lines were all replaced for $2000. If the vehicle had set on fire it would have exploded under the driver's seat. Updated 08/20/2012

- Shipbottom, NJ, USA

problem #5

Dec 132007

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 65,346 miles
Several times happening in the outside vicinity of my vehicle I could smell gasoline. Took my vehicle to the dealer and described my problem to them and expressed my safety concerns about the gas smell. They advised me my vehicle should not be driven until they could inspect and diagnose the nature of the gasoline smell. Dealer inspected and found the fuel sending unit and line to be corroded on top of the gas tank and it was leaking fuel onto the tank. Dealer in process of replacing fuel sending unit with a new unit. Cost of repair quoted at $840 dollars. Dealer gave me a discounted quote "to help make things right" of around $340. Vehicle is a 2003 Chevy trailblazer with 65,000 miles. Seems unacceptable to me for a 4 year old vehicle to develop a problem of this nature.

- Elyria, OH, USA

problem #4

Nov 202007

Trailblazer EXT 4WD 8-cyl

  • Automatic transmission
  • miles
Fuel tank sending unit lines corroded and leaking.

- Albion, NY, USA

problem #3

Dec 102006

Trailblazer EXT 4WD 6-cyl

  • 61,000 miles


I own a 2003 Chevy Trailblazer ext. I began smelling gas, and soon after noticed it leaking from my vehicle. After taking it into my local dealership it was found that my fuel module and gas lines needed to be replaced because of corrosion. Because of the word corrosion it then voided being covered under my extended warranty. The SUV sat at the dealership for 5 weeks because of a national backorder on the fuel lines. So, with having no vehicle rental would not be covered because it was not warranty work. I was stuck with a $900 bill on a vehicle that was three and a half years old.

- Lockport, NY, USA

problem #2

Nov 292006

Trailblazer EXT 4WD 6-cyl

  • Automatic transmission
  • 75,000 miles
I own a 2003 Chevrolet Trailblazer ext. I smelled a strong odor of gas emanating from my vehicle recently. After some investigating, I discovered that there was fuel leaking out of the top of my fuel tank only while the engine was running. I dropped the fuel tank and discovered that the metal nipples from the top of the fuel pump that connect the fuel lines to the fuel pump were completely rusted and when the vehicle was running, fuel was jetting all over the under carriage of my vehicle. The metal ring that holds the fuel pump to the tank was also severely rusted. GM should know better than to put exposed metal fittings in a recessed tank where it is subject to rust, salt, corrosion etc. I had to replace the fuel pump at a significant cost. I also believe that this could be a potential fire hazard as the fuel was jetting all over the undercarriage and its proximity to the exhaust. My fittings were so brittle that you could crush them with your bare hands. Left unchecked, undoubtedly I would have experienced a loss of power and would have been a hazard to the other vehicles on the road-yet alone probably would have been stranded when the vehicle died. The old parts are available for inspection. A fuel pump should last more that (3) years in my opinion. This is a design and/or product failure.

- Steubenville, OH, USA

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problem #1

Oct 132006

Trailblazer EXT 6-cyl

  • Automatic transmission
  • miles
I have a 2003 Chevy trailblazer and the service engine soon light was on. I took it to the dealership to have it looked at and they said the gas tank inlet line had a crack in it and I needed a new tank, it would cost $906. I did some research and there is a special policy adjustment #05012 for 2002 trailblazers. The dealership said they would replace it for free cause they are the same tanks on the 2002 and 2003, but I still had to pay $87 for the diagnostic fee. I told the dealership and customer service all the vehicles should be recalled and changed before someone gets seriously hurt from on exploding. They told me they are doing something about it, they are replacing my tank. But what about all the other tanks out there that could be leaking, and if someone rear ends them, or a elect short causes a spark, a cigarette being flicked out the window, someone needs to do something about it before someone get killed.

- Harrisburg, PA, USA

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