Print this page Notes: The 2002-2007 Chevrolet Trailblazer is known for many things, but perhaps it is most famous for its faulty fuel gauge.

This gauge flip-flops more than a politician during election season. Some report that the gauge says "empty" after a fill-up, while others report the gauge says "full" when they're running on fumes. Either way, there's one thing everyone seems to agree on: the darn thing is just wrong.

Following hundreds of complaints and a few accidents allegedly caused by the malfunction, the National Highway Traffic Safety Administration (NHTSA) opened an investigation into the issue in May 2011. Unfortunately for frustrated owners, no recall has been announced.


hardly worth mentioning
Crashes / Fires:
0 / 2
Injuries / Deaths:
0 / 0
Average Mileage:
53,804 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.

2007 Chevrolet Trailblazer fuel system problems

fuel system problem

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2007 Chevrolet Trailblazer Owner Comments (Page 9 of 11)

« Read the previous 20 complaints

problem #54

Sep 012010

Trailblazer 6-cyl

  • 40,000 miles


Fuel gauge on my 2007 Chevy Trailblazer quit working suddenly at about 40K mile. GM denies any recall in order, but seems to be a common problem across the country when I research it on the internet. Now they're giving me the run around about fixing it.

- Arlington, TX, USA

problem #53

Feb 022011

Trailblazer 4WD 6-cyl

  • 64,000 miles
My 2007 Chevrolet Trailblazer's fuel gauge is no longer functioning properly. The vehicle has been receiving all preventive and scheduled maintenance and has approximately 64,000 miles. The problem started approximately two weeks ago (first week of February 2011) and has progressed to the point where it has completely failed. The gauge will indicate proper level when key is turned on but will drop to zero with low level light staying on almost immediately after the vehicle is started even if the fuel tank is full. This makes it very difficult for me to continue to allow my teenage daughter to use this vehicle as her primary transportation to school and work. Especially in the winter months where being stuck on the side of road in the country can be a matter of life or death. I have taken the vehicle to the dealership for estimate and the repair will reach between $600-900 since the vehicle is out of warranty. I understand from talking to professional mechanics and internet research that this problem is well documented and known to be the use of substandard parts in the fuel level sensors in the fuel tank. Even if my limited research is not conclusive, the number of incidents where this occurs seems to warrant a response from the company.

- Cuyler, NY, USA

problem #52

Jul 012010


  • 20,000 miles
My fuel sender is blown. Gas gauge light is always on and reads empty. This is a huge problem with Trailblazers and there is no recall because we have to call GM with the issues we have in order for them to have a recall. So please if anyone has a fuel gauge problem in your Trailblazer please call 1-866-790-5600 and lets get this rolling as a recall people.. the more people that call soon the faster the recall will happen. Let"S do this!!!!

- Versailles, PA, USA

problem #51

Dec 152010


  • 54,000 miles


The contact owns a 2007 Chevrolet Trailblazer. Upon starting the vehicle, the fuel gauge displayed a reading of empty. The contact refueled the vehicle but the gauge showed a full tank for a moment then dropped down to empty. The check engine light also illuminated on the instrument panel. The vehicle was not inspected or repaired. The failure and current mileages were 54,000.

- Wyandotte, MI, USA

problem #50

Jan 252011

Trailblazer 4WD 6-cyl

  • 75,000 miles
Like many other owners of the 2007 Trailblazer, I have experienced failure of the fuel gauge. This is the second time it needs replacement in the four years I have owned this vehicle, and GM is not covering it under the warranty. The gauge goes down to zero and the low fuel indicator chimes. Last time around the check engine light also came on.

- Selden, NY, USA

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problem #49

Dec 152009


  • miles
My 2007 Trailblazer was purchased brand new. My gas light stays on continually and my check engine light comes on periodically. I took my truck to the dealer to find out that the cost of repair was not covered on my warranty.

- Lonoke, AR, USA

problem #48

Jan 072011

Trailblazer 6-cyl

  • 49,000 miles


I have a 2007 Chevy Trailblazer with less than 50,000 miles, the fuel level sensor just went out. The estimate was nearly a thousand dollars.....this of course is not covered by extended warranty, which was included in the price of this vehicle when I purchased in Feb of 2010. The low fuel light is on at all times. I estimate fuel mileage with every fill up. Butt I am disabled, and running out of gas somewhere on the side of the road is not an option. I bought this vehicle thinking I would be safe driving it. I can't afford an expensive repair like this.I have owned GM all my life....very disappointed in GM...

- Bancroft, MI, USA

problem #47

Jan 042011

Trailblazer 4WD 6-cyl

  • 52,500 miles
The fuel level sensor installed in model year 2007 Chevrolet Trailblazer vehicles. The fuel tank level sensor is defective and could result in a subject vehicle running out of fuel, stall, and being rear ended by another vehicle.

- Sioux Lookout, On, 00, USA

problem #46

Jul 172009

Trailblazer 4WD 6-cyl

  • 48,500 miles
I own a 2007 Chevrolet Trailblazer. The fuel gauge indicator remains illuminated no matter how much fuel is in the tank. As a result, my wife and I are never fully aware of the amount of gasoline left in the fuel tank. I believe it to be a defect as so many other people online is experiencing the same issues.

- Cicero, IN, USA

problem #45

Dec 232010

Trailblazer 4WD 6-cyl

  • 25,900 miles
Upon filling up the gas tank on the vehicle, the gas gage dropped to "empty". the gas gage then went to half and returned to empty several times. The gas gage finally returned to full, the correct level. However, several minutes later, while traveling over a narrow two-lane bridge, I was startled by the sound of a warning chime. While trying to identify the source of the warning I was distracted and almost caused a collision on the bridge. It turns out that the gas level had returned to the empty level even though the tank was full. The "check engine" light subsequently came on. I did some on-line research (google "Trailblazer fuel defects") and found hundreds of comments from Trailblazer owners who had exactly the same problem. The year of vehicle ranges from 2003 to 2008. Many of these owners state that due to the defective gas gage they had run out of gas while in motion thereby endangering themselves and others.

- Jamaica, NY, USA

problem #44

Dec 282010

Trailblazer 4WD 6-cyl

  • 56,100 miles


Fuel level gauge fluctuates from low fuel to accurate fuel level once actual gas level reaches approximately 1/2 tank.

- Clinton, MD, USA

problem #43

Jan 022011

Trailblazer 6-cyl

  • 57,500 miles
Gas gauge is irratic after filling up. I believe it is a faulty fuel level sensor.

- Live Oak, FL, USA

problem #42

Dec 012010

Trailblazer 4WD 6-cyl

  • 58,284 miles
The fuel tank sender stops working when the fuel level in the tank reaches half full. It occurs every time the tank reaches half full.

- Albany, OR, USA

problem #41

Oct 222010


  • 51,000 miles
2007 Trailblazer gas light comes on when fuel tank is full. This needs to be a recall due to fact vehicle could fail on road in freezing conditions. Lives could be in danger for faulty reading or for engine failure due to improper sensor working. Apparently this has happened to many people with even 2005-2006 models. It is not covered under warranty. There needs to be something done about this for safety of the public!!!!!!

- Williston, ND, USA

problem #40

Dec 012010


  • 24,000 miles
The contact owns a 2007 Chevrolet Trailblazer. While driving at any speed, the contact noticed that the fuel gauge would indicate inaccurate fuel levels. The dealer was informed and they advised the contact to bring the vehicle in for diagnostic testing. The manufacturer was notified and the contact was awaiting a response. The vehicle was not repaired. The current mileage was approximately 24,453. The failure mileage was approximately 24,000.

- Wilkes-Barre, PA, USA

problem #39

Nov 102010

Trailblazer 4WD 6-cyl

  • 51,500 miles
When I start my vehicle, gas gauge rises to actual gas level. After 3-4 minutes of driving, gas gauge drops to empty, and remains until truck is restarted. Sometimes the gauge will rise to one-half tank, and stay as well. On one occasion, I was stranded on the interstate with my 4 year old son and my wife. The gauge was stuck a half tank, but I was actually out of gas. 4 hours later I was back home. On some level I think that constitutes a safety hazard. I called my local GM dealership and said it was most likely a fuel-sending unit inside the tank, and it was not covered by my power-train warranty. Was told it would be between $600-$900 to replace. Ridiculous!!! I have read hundreds of similar issues to the same make and model of my trail Blazer. It is time for GM to allow these to be replaced under the 100,000 mile power train warranty. This may not qualify as a safety recall, but surely a defect that GM needs to address!!!

- Clearwater, MN, USA

problem #38

Oct 132010


  • 52,320 miles
At approximately 52,000 miles my fuel gauge broke. It first began when the vehicle was at less than 1/2 tank I could see the needle drop to E in a matter of minutes. Now, it doesn't matter if the tank is full or half empty it always registers on E. the light continues to beep and now my check engine light is on! I cannot believe GM will not recall the Trailblazer due to this issue, the dealer sure don't disclose this faulty problem when they are trying to sale you the vehicle!!!

- Oak Park, MI, USA

problem #37

Oct 102010

Trailblazer 6-cyl

  • 42,000 miles
Fuel level sensor failing.

- Columbus, MT, USA

problem #36

Sep 282010

Trailblazer 4WD 6-cyl

  • 20,000 miles
I own a 2007 Chevy Trailblazer and the gas meter in the Blazer says it empty when I just fill it. Now when I drive the light beeps and stays on. I have researched this problem and I see I am not the only one who has this trouble with my Blazer. I cant believe there was not a recall on the sensor in the gas take. I contacted my dealer I bought the car from and explained the problem and they said that it not covered in the bumper to bumper warranty I bought for the vehicle. It cost over $1,000 to fix it. I feel that if I am not the only one with this problem, I see there is alot of people with this concern about there vehicle. I don't feel now my vehicle is safe and it only has 30, 000 miles on it.

- Aleppo, PA, USA

problem #35

Aug 012010

Trailblazer 4WD 6-cyl

  • 49,000 miles
I was at sams club filling up my vehicle when the gas gauge went to empty and the light came on. The gas gauge thereafter began fluctuating and continues to do the same. Most of the time it starts out showing an inconsistent reading then goes to empty. Fuel descending unit gone bad. An inquiry on the internet reveals a large quantity of Trailblazers have the same issues. The dealerships are also very familiar with the issue. My vehicle had 49,000 miles and some change with this first occurred. Can you imagine running out of gas in a rural area with or without kids with no help in site, or even worse in a urban high crime area passing through. GM has failed to issue a recall for this problem despite the large quantity of vehicles exhibiting this problem. I found the average mileage was 52,000 when this occurs. This repair is rather costly requiring the gas tank to be removed. At this point I am trying to keep up with my mileage, fortunately for me I did not run out of gas when this first occurred.

- Lexington, KY, USA

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