Which parts fail
Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2007 Chevrolet Trailblazer owners, lightly cleaned up (personal details are redacted by NHTSA).
Vehicle was parked with all doors locked and the vehicle not running. The remote unlock button was engaged and all doors unlocked with the exception of the driver door. The remote unlock was engaged 3 to 4 more times. The door was manually unlocked from passenger's side. When the door was opened, smoke was pouring out of the inside. We poured available liquids down the window slot but smoke was still pouring out. While my spouse went inside the business where we were parked to grab a pitcher of water, I jerked the plastic oval piece around the inside door handle off and saw flames. He returned with the pitcher and we poured the water down the open hole at the door handle and finally managed to extinguish the flames. We drove the vehicle home but none of the door functions worked at all. It is going to cost me approximately $600 to fix this issue. …
Inaccurate fuel level reading. In November, my fuel gauge and driver information center began to spontaneously read erratically and would not accurately show me how much gas I had. Condition has rapidly progressed to where the fuel gauge almost constantly reads empty, low fuel light is illuminated and fuel level low is displayed in the dic. In researching this issue, I found service bulletin no. 10054b which states it is a premature wearing of the fuel sensor and I should have received a mailed notice from GM regarding this known issue. I have not received any such notice. …
After purchasing a tank of gas and driving from the service station, my display registered empty and the check engine light displayed. I reviewed the vehicle owner's manual and discovered there was a serious problem. I retained the letter regarding this "possible" situation that I received in 2012 or 2013 (not dated), and took it to the dealership where I normally have my car serviced. Since the vehicle exceeded the allowable mileage (120,000), I was told they would not honor the 50/50 payment and the cost associated would be 922.83 to repair. I telephoned general motors regarding the condition and advised that I feel they should be 100% responsible for the repair, since the condition was anticipated and not due to normal usage. Based on the description of the problem and continued safety issue, Chevrolet should correct the problem at no cost to the owner. …
My 2007 new Trailblazer started on fire while it was off and parked for over 12 hours in May of 2008. After 2 and 1/2 months of not having my truck it was determined to be an electrical short. GM admitted it was a fault of theirs seeing as my truck was not even a year old and purchased new. Ever since the car was returned back to me the indicator lights go on and off and today I was driving and the check engine came on. I immediately took it in to have it looked at and was told that there is an electrical short and a fire could have started again had I not brought this in sooner. So for the 2nd time I am risking my life everytime I drive this truck!
I was driving 10 MPH and suddenly the neddle of the gas went all the way down like I didn't have gas, and the car turn off itself. So I put the gear in park and started the car again so it work again but the needle took 15 minutes to go up all the way to full. And I know my tank was full because I pump was the night before. So I keep driving for 3 days and filled again my tank the night before and next day I turn on the car again the neddle went down a quarter. The mecanic sai was the fuel sensor pump gas. And I hear other people have the same problem. The repair cost me 730 dollars .
The gas gauge quit working! I just put 50.00 dollars in my gas tank and drove 12 miles to get my three grandchildren. We were on the freeway going 64 miles per hr in the fast lane. I had to immediately get over three lanes to get off the freeway but only made it to the slow lane. I had to call 911 because it was a very dangerous situation. I almost got hit eight times waiting for the state trooper to get to me so he could push us out of harms way with his patrol car. I can't believe this wasn't a recall! This is a big safety issue please do something about this.
Fuel gauge read full tank when in fact the tank was empty. I ran out of gas in my driveway. When this occurred my on dash computer went crazy lighting up then turning off, when I put gas in the car and restarted several times the computer seemed to correct itself. Filling the tank the gauge read empty and remained that way for several days. The gauge operates intermittently. I recently had the fuel pump replaced after failure. The pump was replaced prior to this incident. I have scheduled the gauge repair with my dealer.
After picking up my husband from work, we stopped at a store, where I stayed in my Chevy Trailblazer while hubby went in, I happened to lookover at gauges and noticed the fuel gauge slowly going down. When hubby came out of store I had him check to see if we had a fuel leak, and nothing seemed to be leaking. We left store and gas gauge continued to decrease until light came on and gauge reads empty. This started about a week ago and continues to be an issue.
Erratic fuel gauge. Fluctuates constantly between full and empty. This occurs whether the vehicle is in motion or at a stop. Whether the tank is full or partial does not matter. Cannot rely on gas gauge any longer. Could cause a stall while in motion which would be a serious safety concern. There are thousands of complaints regarding this matter all over the internet. A recall should be put in place. Before someone dies.
When I fill the fuel tank, the fuel gauge shows empty and the low fuel light comes on and the low fuel alarm will ding. Sometimes the gauge will go up and then back down. Sometimes, the gauge will show correctly but you are never sure. This occurs when moving or sitting on a slope or on flat ground.
NHTSA investigations
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…
Fuel System complaints in other Trailblazer years
Frequently asked questions
How common are fuel system problems on the 2007 Chevrolet Trailblazer?
NHTSA has 311 complaints about the fuel & propulsion system of the 2007 Chevrolet Trailblazer, 42% of the model year's 732 complaints. The component named most often is storage › fuel gauge system (13 mentions).
Is there a recall for 2007 Chevrolet Trailblazer fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2007 Chevrolet Trailblazer, though it has 5 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2007 Chevrolet Trailblazer fuel system problems start?
Half of the complaints with a recorded mileage happened before about 56,000 miles, and 3% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 3 fires and 0 injuries to fuel & propulsion system problems on this model year. If you notice symptoms, have the car checked before driving further.
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.