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Fuel systemPart report

2004 Chevrolet Trailblazer EXT 370 Fuel system Problems

Complaints
6about this part
Share
40%of 15 total for the year
Median mileage
103,934miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 6 complaints about the fuel system of the 2004 Chevrolet Trailblazer EXT 370, 40% of the 15 complaints for this model year. Where a mileage was given, the median is 103,934 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Received a letter from GM regarding potential problem with fuel tank inlet valve. Took vehicle to dealer len stoler, inc in westminster md in december. Problem was diagnosed as a fuel tank inlet valve fracture. On dec 3rd 2015 fuel tank was replaced and inspection done. Subsequent to service when fuel was placed in vehicle gas poured out on pavement. Prior to that service this was not an issue only the smell of fuel in the interior and a few drops of fuel noted. Took vehicle back to dealer and problem now diagnosed as inlet pipe fracture. …”

NHTSA complaint #10820919, filed 2016-01, 92,000 miles

“2004 chevy trailblazer ext northface edition with the v8 engine is leaking gas due to a crack in the gas tank and the repair is over 1000$, my truck only has 7500 miles on it and everything seems to be messing up.”

NHTSA complaint #10359201, filed 2010-10, 74,000 miles

“I am extremely disappointment and afraid of my trailblazer at this point. We purchased the vehicle used and within a week of having the truck it started dying at redlights. Out of nowhere the truck just shuts off in the middle of the road. It has got to the point now that it does it while the vehicle is actually in motion. I have 3 kids and this is not safe! I lose total control of the vehicle. The headlight plug has burned up twice on the driver side and it has been replaced. …”

NHTSA complaint #10594004, filed 2014-05

“The contact owns a 2004 Chevrolet TRAILBLAZER EXT 370. While in a parking lot, the vehicle stalled without warning. The vehicle was towed to an independent dealer. The technician diagnosed that the fuel pump and fuel filter needed to be replaced the filler inlet was also cracked. The contact mentioned that the fuel pump, the fuel filter, and the hose were replaced. However, the fuel tank filler inlet was not. The manufacturer was not made aware of the failure. The approximate failure mileage was 115,869.”

NHTSA complaint #10725807, filed 2015-06, 115,869 miles

“I purchased a 2004 chevy trailblazer in september 2003. Within 6 months of purchase, the check engine light came on. Dealer said it was a computer error and reset the computer. Approximately every 6 months thereafter, check engine light came on and dealer said each time it was evaporation caused by not tightening gas cap appropriately. Dealership changed owners and new dealer reset the computer once (saying gas cap not tightened appropriately), the second time found a hole in hose that comes out of the gas tank and repaired it. …”

NHTSA complaint #10368603, filed 2010-12

Related service bulletins

Fuel system: other model years

YearComplaintsShare of year
2006319%
20059440%
2004640%
2003321%
2002117%

Other parts of the 2004 Chevrolet Trailblazer EXT 370

Electrical system
6 complaints
Air bags
1 complaints
Brakes
1 complaints
Engine cooling
1 complaints
Exterior lighting
1 complaints
Other or unknown
1 complaints
Seats
1 complaints
Visibility (wipers, defrost, mirrors)
1 complaints

← All problems reported for the 2004 Chevrolet Trailblazer EXT 370

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology