Fuel System complaints by model year
Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
What owners report
Ran out of fuel stuck on highway, fuel gauge anomaly, I see that this is a common problem for GM SUV vehicles form 2006-2009, can put family is a dangerous situation with children I car at a remote location. Scary....please help us. [redacted]
" Takata recall" GM said my recall had expired on the fuel sensor in 2015..I had it replace twice...2007 and 2009...so many recalls could not remember until going through files and found I did have these replaced
I purchased a Chevrolet EXT Trailblazer on nov. 26, 2004. 2 months later on feb. 1, 2005 it was towed into the dealership after shutting down 5 times with 2 loud explosions. The malfuction of the vehicle came close to a couple of accidents occuring and an almost near death experience for my daugher and I when it shut down for on a 4 lane highway by attempting to cross it unto the residential area. The dealership informed me that the fuel injection valve had malfuctioned and remained open releasing all the gasoline unto the engine. They are replacing the injector, spark plugs/wires that were flooded with gasoline, and the intake gasket. I contacted GM which also confirmed to me that the series of events could have started a vehicle fire and the first time this happened I should have left the engine off and vacated it immediately. …
The vehicle was purchased in sept 2004. In March 2005 I started noticing it was hard to start in the morning when it was cold and it idled roughly and would stall when I pressed the gas pedal to accelerate. The dealer found nothing wrong with it then. In April 2005, with 9400 miles on it, the service engine light came on so I took it back to dealership. They cleaned out (flushed) the fuel system and proceeded to tell me not to buy "cheap gas" because sometimes it will have particles in it that can clog up the fuel system (then what is the fuel filter for?). Since then I have had the fuel system flushed three more times. I probably could have had it done more times, but it is extremely inconvenient to keep going to the dealership and being without a vehicle, so I just dealt with the rough idle and hesitations. …
NHTSA action number : pe07014 occurred on my vehicle around November 2014. The problem presented as p0442 CEL and odor of gas after parking in garage. GM has indicated because the special consideration allowance has expired, despite the low mileage they will do nothing. This vehicle was purchased new in August 2003. I do not understand why GM was not compelled to issue a safety recall due to the risk of gas leaking. I would appreciate assistance to get GM to minimally provide defective parts replacement, due to the know manufacturing defect in the gas tank.
2003 Chevy Trailblazer EXT. Service engine light went on about a month ago. Service at dealership said we needed a new gas cap. This did not fix the problem. Light went back on, took it back this past Saturday. Was told gooseneck to gas tank is cracked, resulting in a fuel leak (I have an infant). Was also told that the trailblazers often come in for that problem, that there was a recall. The dealership wants over $700.00 to replace the tank. We have a new baby and are down to only one household income. I called Chevrolet this morning and was told that there is a recall for this exact problem but that my VIN is not on their list si I must have "run something over" that cracked the gooseneck. I don't know much about cars but I know something being run over would not make it to the gooseneck. …
There is rust all over the inside of my engine, two exhaust manifold bolts rusted off and I had an exhaust leak. I had to have it fixed so I took it into a Chevrolet dealer. While it was there they told me that the gas tank had a crack in it and had to be replaced, at a cost of over 700.00 dollars. I can't afford to have the manifold and tank fixed. Now I am faced with either exhaust leaking or gas leaking. They said the gas tank was cracked at the neck. I called general motors to state that I thought it was a manufacturers defect. GM called the dealer and they told them that the vehicle was in good shape and that there was no sign of misuse or neglect. GM called me back and stated that the crack was due to the age of the vehicle and wear and tear. I have never heard of a vehicle gas tank cracking for no reason unless there was a defect in the gas tank itself. …
After refilling fuel tank full of gasoline and driving until ~80% full, I smelled fuel vapors coming from the vehicle when standing outside. Outside temperature was ~70 f. After the next trip the vehicle MIL came on. Codes were related to EVAP leak p0442. Dealer replaced fuel tank and filler neck tube, cracked. Almost 1 year prior GM issued a notice that this issue might occur and would be covered at GM's expense. I recalled that I had received a letter regarding a MIL light that might appear. Dealer repaired vehicle under this letter / warranty. Vehicle had ~80K miles. Driven daily in 4 season area.
NHTSA investigations
Fuel tank leak
In June 2007, GM will expand its special policy to address fuel tank inlet check valve (icv) fractures on certain model year (my) trailblazer ext and GMC envoy xl vehicles.the expanded policy covers my 2002-2004 trailblazer ext, GMC envoy xl, and GMC envoy xuv vehicles and will extend for a period of 10 years or 150,000 miles (whichever comes first).GM will provide free repair of the fuel tank.
Fuel pump module leaks gasoline
Odi has received reports that the fuel pump module leaks fuel and or vapor underneath the vehicle.GM states, the failure mechanism is corrosion of the fuel pump module flange which May lead to a fuel leak.corrosion of the fuel pump module flange is the result of the vehicle operating in a corrosive environment.odi has upgraded this pe to engineering analysis (ea07-009) to further assess this issue.
Fuel pump module leaks gasoline
During the course of this ea investigation, odi observed that the majority of the complaints (88%) and warranty claims (94%) were reported for vehicles that are registered for use in the salt belt region of the us.this area includes 20 states in the northeast, mid atlantic and the midwest regions and the district of columbia.consumers in the salt belt region reported to odi that they could smell fuel vapors in their…
Fuel spillage during refueling
This investigation was opened on the model year (my) 2003 Chevrolet trailblazer.based on GM's information request (ir) response, odi added to its analysis the my 2003 GMC envoy and Oldsmobile bravada vehicles.these vehicles share the same vehicle platform (GM 360/370) and fuel fill components.incident summary numbers reported above include these vehicles.epa regulates the fuel dispensing rates at filling stations…
Fuel Level Gauge System Failure
The Office of Defects Investigation has received 668 complaints alleging inaccurate fuel gauge reading while driving in model year 2005-07 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, and Saab 9-7x vehicles.Of the 668 complaints, 58 incidents were alleged to result in a vehicle stall.Of the 58 stalling incidents, 43 complaints reported stalling because the fuel level reading indicated more fuel availability than…
Frequently asked questions
Which Chevrolet Trailblazer EXT years have fuel system problems?
By NHTSA complaints, the 2006 (129), 2003 (89), 2004 (46) and 2002 (23) model years. Fuel System complaints make up 68% of all complaints for the 2006.
Is there a recall for Chevrolet Trailblazer EXT fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for any Chevrolet Trailblazer EXT model year. A widespread problem may still be covered by an extended warranty or a manufacturer service bulletin, so ask a dealer.
At what mileage do Chevrolet Trailblazer EXT fuel system problems start?
Across all years, half of the complaints with a recorded mileage happened before about 67,000 miles; 28% happened before 50,000 miles.
What part fails most often?
Owners most often name the storage › tank assembly (22 mentions), followed by the storage › tank assembly › filler pipe and cap (21).
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.