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hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
128,354 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 Avalanche fuel system problems

fuel system problem

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2004 Chevrolet Avalanche Owner Comments

problem #4

Dec 062015


  • 144,000 miles


The contact owns a 2004 Chevrolet Avalanche 1500. The contact stated that when the vehicle was turned off, fuel leaked from the fuel lines and a fuel odor emitted into the vehicle without warning. In addition, the contact stated that the brake pedal became extremely difficult to depress as the ABS warning light illuminated. The contact also mentioned that the seat belts failed to secure and retract properly. The vehicle was taken to an independent mechanic where it was diagnosed that the fuel pump modular assembly, module kit and fuel tank needed to be replaced. The manufacturer was notified of the failure and stated that the vehicle was not included in NHTSA campaign numbers: 06E043000 (fuel system, gasoline), 05V163000 (seat belts), 05V043000 (service brakes, hydraulic). The approximate failure mileage was 144,000.

- Cedar Rapids, IA, USA

problem #3

Dec 082015


  • 145,000 miles
Module kit, F/tnk F/pmp, lvl S/fuel pump module assembly is leaking fuel, becase of poor grade plastic and metal construction, this also happened on my 2002 trailblazer but was covered by a recall, no such recall covers my 2004 avalache even though it is the same problem, cost to fix $870.89 estimate, to remove gas tank and replace fuel pump module assembly, cant send pics have drop gas tank and that cost is $250, vehile stars slowly then when parked empties fuel lines on top of tank then on to ground very dangerous, service manager big jim 319 261 0999, says this is a common problem, he knew what it was before inspecting on houste, if 2002 is covered why is 2004 not covered? want my $1000 back from

- Cedar Rapids, IA, USA

problem #2

Jul 012014

Avalanche 8-cyl

  • 171,914 miles
Started smelling a strong odor of gas after filling up. I checked under the truck and saw gas that seem to be coming from the top of the gas tank and dripping off the bottom of the gas tank.

- Chicago, IL, USA

problem #1

Oct 242012


  • 52,500 miles
Rear hydraulic brake lines rotted and leaked fluid causing loss of braking. Last year I had to have the rear brake calipers replaced due to excessive rust and rot. The mechanic performing current repairs stats that the front hydraulic lines are rusting and will have to be replaced soon. The front calipers have rotted out bleeder valves. The front calipers will have to be replaced as a result when the front hydraulic lines are replaced. Check engine light was diagnosed to an evaporative emissions system leak. The leak was traced to a damaged plastic fitting connected to the fuel pump at the top of the fuel tank. The fuel pump metal was rotted causing the joint to expand damaging the fitting and causing the leak. I do not trailer a boat and the truck has never been immersed in salt water. I have been driving for over 40 years and have never had this amount of undercarriage rust and metal damage on any vehicle I have owned with many more miles and years of service.

- St. James, NY, USA

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