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: It would be ill-advised to blaze any trails with the 2004 Trailblazer. Its faulty fuel gauge could leave you stranded.


really awful
Crashes / Fires:
1 / 0
Injuries / Deaths:
1 / 0
Average Mileage:
63,318 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.

2004 Chevrolet Trailblazer fuel system problems

fuel system problem

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2004 Chevrolet Trailblazer Owner Comments (Page 4 of 4)

« Read the previous 20 complaints

problem #10

Sep 102008


  • 40,000 miles


2004 Chevy Trailblazer is leaking fuel. A 3rd party (non-GM) mechanic diagnosed the problem as a crack in the gas tank. According to the mechanic, the vehicle was leaking fuel onto the floor of his shop.

- Oklahoma City, OK, USA

problem #9

Mar 092008


  • 78,000 miles
The contact owns a 2004 Chevrolet Trailblazer. The contact stated that the fuel gauge on the instrument panel no longer works. She does not know when to place fuel in the vehicle. The failure has not been repaired. The current mileage was 80,000 and failure mileage was 78,000.

- Conifer , CO, USA

problem #8

Jun 102008


  • miles
Around 50K miles the service engine light came on. I took the vehicle to the dealership. I was asked if I had recently got gas, when I replied yes, he told me to tighten the gas cap and the light would go if in a few days. The light did go off but the mechanic never documented anything about my visit. Several weeks later the service engine light came on again. Thinking that it was the same situation I tightened the gas cap and did not go back to the dealership. This time the service engine light did not go off. I took the vehicle to an independent garage to get it checked out and the result was a malfunction in the fuel system. Often times I smell gas vapors especially after fueling. Recently I was parked on a hill and gas was dripping from my tank. Local dealerships act as if they have never heard of the problem. My warranty has expired.

- Milner, GA, USA

problem #7

Jun 142007


  • 83,000 miles


I was smelling gas fumes coming from my '04 Chevy Trailblazer. After some investigation found that the fitting going into the fuel tank from the fill line is leaking. The check engine has been on for a while.

- Milner, GA, USA

problem #6

Jun 262008


  • 64,000 miles
2004 Trailblazer ls, 65,000 miles, noticed strong gas odor around the fuel filler door. Mechanic just called and said the neck on the fuel tank was cracked and leaking. Repair cost $800+ to replace plastic gas tank. Based on my research this appear a safety manufacturer defect.

- Spring Hill, TN, USA

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problem #5

Jun 162008


  • 42,500 miles
Fuel leakage caused by corosion at fuel pump outlet pipe. Gas pumped onto ground under vehicle. Mechanic replaced sending/filter unit cost $610 plus 5 gallons of gas lost.

- Factoryville, PA, USA

problem #4

Apr 282008

Trailblazer 6-cyl

  • 49,532 miles


Check engine light came on three times within the first month and a half I owned the used 04 Trailblazer. It seems common from what most people posted on the internet that this problem occurs anywhere from 35 - 55K miles. The gas tank would constantly release an odor and I would get dizzy every time I drove the truck. I took it in to the dealer and they said it was just a leak in the gas cap and that it needed to be replaced. Once the warranty expired (one week later), the S.E..light came on again and the dealer service department stated that there was a crack in the neck of the tank and that it needed to be replaced. I picked it up today after it was replaced and totaled to $1,430. GM knows about this problem and hopefully the letter that I have written to them will solve this issue and that I will either be reimbursed or compensated somehow for lost work and interest paid on this bill.

- Collingswood, NJ, USA

problem #3

Jan 182008

Trailblazer 6-cyl

  • Automatic transmission
  • 36,500 miles
Service engine light on, just out of warranty at the time. Garage found leak in fuel tank fill neck. Gasoline smell.

- Griffin, GA, USA

problem #2

Feb 082008

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 100,000 miles
Gas leaking from gas tank and causing a puddle of gas to form under vehicle. Vehicles is a 2004 Chevy Trailblazer. Refer to NHTSA action # PE07013.

- Sandylake, PA, USA

problem #1

Jul 042007

Trailblazer 6-cyl

  • Automatic transmission
  • 35,800 miles
2004 chevrolte Trailblazer- it cuts off while in traffic. There is a blog site with people from all over the country complianing of the problem. Dealer says, 'cannot duplicate problem.' The vehicle also produces strong gasoline odor. Dealer says, 'cannot duplicate problem.' This problem is also listed on the blog complaint site with a warning not to leave the vehicle in the garage or the fumes will ignite.

- Powder Springs, GA, USA

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