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 2005 Chevrolet Trailblazer EXT 370 owners, lightly cleaned up (personal details are redacted by NHTSA).
My 2005 Chevy Trailblazer is completely going crazy it seems everything electrical is going wrong with it. I am afraid to let my wife or my kids drive in it because I never know what's going to go wrong while driving. My whole gas system is gone from fuel level indicator to the gauge. My entire dashboard is not working. Lights are going out. What is crazy about this is that I am one of thousands that this is happening to. Chevy needs to fix this problem before someone does get killed. Waiting for fatalities before making Chevy fixes there awfully made vehicles is unacceptable. I understand the situation our economy is in but these thousands of Trailblazer owners that are having these problems shouldn't be paying thousands of dollars to be getting there entire electrical problem fixed. I do not know one owner of a 2006 Trailblazer that does not have this same problem. …
Fuel gauge has been ready empty for several months. I looked on internet to see how to fix or possible problems. I noticed there was a letter sent years ago to the affect that GM would cover half the cost to repair, up to 10 years in service or 100,000 miles. When I contacted dealer the car was in service 10 years and 2 weeks and has 84,000 miles. I was informed GM will not help cover expense for repair do to time in service. I am questioning if this could become a recall or extended in service dating for this problem.
I have a 2005 Trailblazer EXT purchased new in July 05. Recently while driving, the car had reduced engine power, the check engine light then came on then my car just shut off. It started back up after pulling off the road but had to endure this the entire time while driving home. When I took it in for diagnosis I was told the accelerator pedal sensor needed to be repaired after having that repaired I drove home and the same thing happened with the check engine light and the car shutting off while driving. When I took it back again they noticed an additional problem " the fuel level sensor wiring was chaffing on fuel pump ground terminal" or in layman's term the wire was sitting in fuel so they had to remove the fuel tank and reroute the wires. This sounds very dangerous and if this is happening please report it. …
Last night (11/01/2010) I went to fill my gas tank. It showed I had 1/4 tank full. I added $50.00 of gasoline at $2.52/gal. That should've been more than enough. I turned the car on and it crept to 1/2 tank. I figured it'd take a few seconds....wrong!!!! As I continued to drive, it crept down to 1/4 tank again and stayed there. I made it to my first destination and asked the kids to get down and look under the car and see if there was anything, anywhere leaking. Nothing. I turned the car off and turned it back on. The fuel gauge started to swiftly rise and made it to 3/4 of a tank when it suddenly dropped to empty where it stayed. Chimes are going off that I have no gas. I shut the car off again and restarted it. Gauge rose to only 1/4 tank. I drove home. This morning, I started the car and it rose to 3/4 tank and stayed that way all the way to work (15 min. Ride). …
I own a 2005 Chevrolet Trailblazer. A year after purchase the fuel gauge quit working properly. It would bounce back and forth between empty and half a tank no matter how much gas was in it at first. Then within three months it quit all together. Now it just sits on empty all the time..repeatedly dinging at me because it reads an empty tank at all times. I can stop at the gas station and fill the tank and start it up and it sits on empty and will ding at me within 5 minutes to tell me the tank is empty. Trying to tell how much fuel is actually in the tank has become a guessing game. Considering I am almost always driving around with my kids in the car it is quite scary to think of running out of gas on the highway or in the middle of a busy intersection. I have researched scores of forums with other owners suffering with the same problem and yet Chevrolet has no concerns. …
I have had the following problems with my 2005 Chevy Trailblazer EXT ls: 2008: fuel sensor failure, running board fell off 2009: head and tail lights going out frequently, windows would get stuck- could not go up or down- all dash lights flashing, car stalling out- needed circuit board replaced. Anti-theft non-functioning. 2010:windshield wipers will not shut off(replaced display board), idle pulley needs to be replaced , 4x4 running rough and making a sound,speedometer non-functioning, radio stopped working,glove box lock broke, heat/ac stopped working first on blowers 4& 5 then stopped completely I have not been able to afford to fix all these repairs, as it exceeds $2,000. Car is over warranty and was brought used from a former GM dealer at under 50K. I contacted GM in November 2010 and they stated that they my vehicle was out of warranty and they could not assist me. …
I started my car up this morning when I noticed that I had only 1/4 tank of gas left, so I drove down to the gas station and filled up until it clicked. I got back in and started the car and the needle was moving very slow then it stopped at 1/4 of a tank and I was like that is impossible. At first I was pissed because I just spent $77 filling up. Then I was scared I thought maybe I had a hole in my fuel tank so I pulled over and saw that there was nothing leaking. Immediately driving to the auto shop I am informed that the fuel gauge isn't working and would need to be replaced. Since we are stationed overseas I would be paying about 400 to 500 euros which isn't happening anytime soon. I was told to keep track of my mileage by setting the odometer everytime I filled up. …
The dash component went out, leaving all of the gauges broken, including the speedometer and gas gauge. Also, the fuel sensor is broken so in order to have a working gas gauge, both the dash system and the fuel sensor must be fixed. The doors lock automatically and sometimes won't unlock if they were locked when the car was turned off until the car is turned on again. It takes them 2 weeks to fix the problem!! Meanwhile, we have run out of gas, almost causing an accident, and continually have to gauge our speed by the speed of others around us, if we are lucky to be traveling where there are others who hopefully are doing the speed limit. It's going to cost about $1500 to fix it all and have a rental car for the 2 week period it takes them to fix it. …
A week ago, my gas gauge light came on like normal indicating I needed fuel. I filled up my gas tank. When I started my engine, the gas gauge light was still on and the gas gauge indicated empty. In fact, it showed less gas than prior to the fill-up. Over the week, the gas gauge appeared to correct itself. However, I again filled my gas tank yesterday because my gas gauge indicator was on. Once again, the light remained on after filling my tank and the gauge showed less gas than prior to fill up. I am very concerned about this as I could easily run out of gas without realizing I needed fuel. I will be making a trip to parris island, sc in August to see my daughter graduate from the us marine corps basic training program. That is a 16 hour drive, one way. If I cannot gauge the amount of fuel I have for the trip, my family could be stranded in the middle of nowhere. …
Report date : October 18, 2010 at 09:14 am search type : vehicle year : 2005 make : Chevrolet model : Trailblazer results : 1 | all records displayed NHTSA action number: n/a NHTSA recall campaign number: dp10001 n/a make: Chevrolet model: Trailblazer manufacturer : general motors corp. Year : 2005 component : fuel system, gasoline:delivery:fuel pump I bought my 2005 Trailblazer a little over a year ago. The gas gauge does not work. It would go all the way to full and then after a couple of miles it would go to "empty." the fuel light comes on and the car will make a loud beep to let you know you are out of fuel. The beep really throws off your concentration to the road and is very distracting. It makes you tap the brakes which could definitely lead to an accident or even running out of gas. This is a serious issue and needs to be fixed.
NHTSA investigations
Fuel level gauge system failure
The office of defects investigations (ODI) analyzed complaint data provided by General Motors (GM) as well as complaints submitted to ODI from consumers.In total, there were 5,089 unique reports indicating an inaccurate fuel level reading while driving.General Motors stated that this condition occurs when the contacts of the fuel sensor wear prematurely.Most of the complaints indicated an empty fuel gauge reading…
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 EXT 370 years
Frequently asked questions
How common are fuel system problems on the 2005 Chevrolet Trailblazer EXT 370?
NHTSA has 94 complaints about the fuel & propulsion system of the 2005 Chevrolet Trailblazer EXT 370, 40% of the model year's 237 complaints. The component named most often is storage › fuel gauge system (3 mentions).
Is there a recall for 2005 Chevrolet Trailblazer EXT 370 fuel system problems?
No. NHTSA lists no fuel & propulsion system recall for the 2005 Chevrolet Trailblazer EXT 370. 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 2005 Chevrolet Trailblazer EXT 370 fuel system problems start?
Half of the complaints with a recorded mileage happened before about 70,000 miles, and 5% before 25,000 miles.
Is it dangerous?
Owners linked 1 crash, 0 fires and 1 injury 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.