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 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
54,641 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.

2005 Chevrolet Trailblazer fuel system problems

fuel system problem

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2005 Chevrolet Trailblazer Owner Comments (Page 1 of 2)

problem #30

Apr 042012

Trailblazer 4WD 6-cyl

  • 117,000 miles


Fuel gauge stopped working.

- Donalsonville, GA, USA

problem #29

Aug 092010

Trailblazer 4WD 6-cyl

  • miles
Failure to give an accurate reading of amount of fuel.

- Pasco, WA, USA

problem #28

Mar 012012


  • 81,000 miles
I filled my gas tank full and it then the gas light comes on. I am having to keep track of my miles so that I don't run out of gas because the fuel needle keeps going up and down, not reading accurately. Now every single time that I put gas in this happens. Very frustrating, especially when I want to travel out of town and you are not sure when you'll see the next gas station. Are there any recalls on this?

- Stevens Point, WI, USA

problem #27

Sep 152010

Trailblazer 4WD 6-cyl

  • 56,000 miles


Gas guage stop working. I recently received a letter from GMC aknowledging a sensor problem with their 2005 GMC cars but only willing to reimburse 50% of what apparently is their fault. This is a problem that need to be fix 100% by GMC. Stand behind your products!

- Las Vegas, NV, USA

problem #26

Apr 012011

Trailblazer 6-cyl

  • miles
2005 Chevrolet Trailblazer. Consumer writes in regards to problem with fuel tank sensor issue

- Warner Robins, GA, USA

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problem #25

Oct 072011

Trailblazer 6-cyl

  • 60,000 miles
We ran out of gas on the highway 20 miles from a gas station with kids in the car. The gas gauge in our 05 Chevy Trailblazer was wrong and indicated we had gas in the tank.

- Garden City, MI, USA

problem #24

Sep 092011


  • miles


We are experiencing a defective gas gauge--it registers empty or it may move up a bit or go down some. We are unable to determine how much fuel we actually have. I go on a trip of 350 miles one way every month to visit my mother and it is a constant worry. I am so afraid I will run out of gas on the turnpike--we just never know. We did get a letter from GM saying they were aware of the problem-interestingly enough, though they will not pay to have this dangerous situation affecting hundreds of thousands of vehicles fixed--only half, which we feel is unfair. This is a problem affecting a great number of people, simply by the fact they sent the letter--they need to make it right by paying for the whole remedy before someone is killed as a result of this faulty gas gauge. We would like to be a part of a class action suit against GM for the full payment.

- Greensburg, PA, USA

problem #23

Aug 012009

Trailblazer 6-cyl

  • miles
My fuel gauge does not work and has not for about two years. I read that there has been many complaints to your organization regarding this problem. Have not fixed because the cost was over $400.

- Las Vegas , NV, USA

problem #22

May 082011

Trailblazer 6-cyl

  • 110,000 miles
Gas gauge quit working. Stepper motor replaced, suspected fuel sensor malfunction. Seems to be a very common defect in these vehicles.

- Tampa, FL, USA

problem #21

Aug 152011


  • miles
I have a 2005 Chevrolet Trailblazer with a faulty fuel gauge. A year or two ago the fuel gauge started working intermittently. Sometimes it would show an accurate reading and other times it would not. Now the fuel gauge just shows empty 100% of the time, no matter how much fuel is in the tank. Due to this issue, I have ran out of fuel and stalled several times. As you can imagine, this is a major safety concern. When the vehicle stalls power steering and braking are lost and it can be difficult to maneuver a large vehicle like this without those systems. I took the vehicle to the dealer and they are stating that the problem is a bad fuel sending unit and the cost to repair is over $600. Researching the issue online I have found that this seems to be a widespread issue. This is unacceptable and a recall needs to be ordered.

- Germantown, WI, USA

problem #20

Mar 202011

Trailblazer 4WD 6-cyl

  • 58,000 miles


The fuel gauge began to be inaccurate. It would occasionally work but not consistently. After about 2 months the gauge stopped working completely. The problem was the sensor in the gas tank malfunctioned and needed replaced. Once the sensor replaced the gas gauge works accurately. The cost of the replacement was $465.

- Council Bluffs, IA, USA

problem #19

Oct 062007

Trailblazer 4WD 6-cyl

  • 30,344 miles
Replace faulty fuel level sensor.

- Omaha, NE, USA

problem #18

Jul 202011

Trailblazer 4WD 6-cyl

  • 65,075 miles
Fuel sensor has to be replace again (2nd time).

- Omaha, NE, USA

problem #17

Oct 012009

Trailblazer 4WD 6-cyl

  • 50,000 miles
When my mileage on my 2005 Chevy Trailblazer was approximately 50,000, the fuel gauge suddenly stopped working and reads that there is an empty tank despite being filled to capacity. From my understanding, this is a systemic fault with the fuel sending unit in the 2005-06 Chevy Trailblazer models that has the potential of putting consumers at great risk due to the potential of running out of gas on expressways, highways, etc. And, as a result of an unexpected loss of mobility, being unnecessarily subject to imminent personal harm from other vehicles. I have lodged a personal complaint with GM and understand that they are aware of this defect in the fuel sending unit as being a system problem, but have failed to issue any voluntary recall of the part. Due to the individual cost of approximately $800 for a consumer to procure this repair (which almost always seems to occur when these vehicles have surpassed 40,000 miles and are therefore outside of the warranty period), I believe it is very likely that a sufficient number of those consumers affected by this part failure, especially in the current economic climate, will be financially unable to afford the cost of repairing this defective part on their own and will, accordingly, be subject to unnecessary and substantial risk given the potential for them to find their vehicles out of gas without any warning whatsoever. Moreover, the potential for collisions due to the sudden deceleration or stranded vehicles on the roadways also poses a substantial threat to other drivers that is entirely unnecessary and extremely dangerous.

- Chicago, IL, USA

problem #16

Jun 152011


  • 43,000 miles
2005 Trailblazer fuel gauge registers empty when filled and starts to register after driving 50 miles or so 43000 mile and it just started

- Wallkill, NY, USA

problem #15

Oct 102010


  • 89,000 miles
The contact owns a 2005 Chevrolet Trailblazer. While the vehicle was parked the contact added fuel and the fuel gauge began fluctuating between empty and full. The vehicle was not taken to the dealer for diagnostic testing. The vehicle was not repaired. There was an investigation under NHTSA action number: DP10001 (fuel system, other:storage:fuel gauge system) that may be related to the failure. The VIN was not available. The approximate failure mileage was 89,000.

- Galesville, WI, USA

problem #14

Sep 272010


  • 76,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact was driving approximately 60 mph when the fuel level gauge momentarily dropped to empty, before going back up to the correct fuel level reading. While the fuel gauge was displaying an empty reading the fuel sensor light began illuminating on the dashboard. The vehicle was not taken to be examined for the cause of failure, but an authorized dealer was notified and he was informed that it was a known failure. The vehicle was not repaired and the failure persisted. The VIN was not available.the failure and current mileage was 76,000.

- Omaha, NE, USA

problem #13

Aug 172007

Trailblazer 6-cyl

  • Automatic transmission
  • 50,000 miles
The contact owns a 2005 Chevrolet trail Blazer. The contact stated that the fuel level gauge would continuously read inaccurate fuel levels causing the vehicle to stall intermittently without warning. The failure would occur even when the fuel tank was full with gasoline. The dealer advised that the fuel pump would need replacing. The fuel pump was replaced three times to no avail. The vehicle was not further repaired. The failure mileage was 50,000 and the current mileage was 120,000. Updated 12/01/10. Updated 12/07/10

- Sanderson, FL, USA

problem #12

Jul 152009


  • 72,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the fuel level gauge would read inaccurate fuel levels and would fluctuate intermittently between empty and full. The vehicle was not repaired. There were no recalls for the vehicle. The failure mileage was 72,000.

- Mansfield, OH, USA

problem #11

Jun 032010


  • 72,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that when filling the vehicle with gasoline fuel, the fuel level indicator would read fuel levels at empty. The dealer and manufacturer were not contacted. The vehicle was not repaired. The failure and current mileages were 72,000.

- Omaha, NE, USA

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