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 2 of 2)

« Read the previous 20 complaints

problem #10

Jun 022009


  • 80,000 miles


The contact owns a 2005 Chevrolet Trailblazer. The contact stated that his fuel gauge did not display the actual amount of fuel in the vehicle. Whenever the vehicle was refueled, the gauge would display an empty reading. The vehicle was taken to an authorized dealership where the contact was informed that the vehicle needed a new fuel sending unit. The vehicle had not been repaired at the time of the complaint. The failure mileage was approximately 80,000. The current mileage was approximately 125,000.

- Southfield, MI, USA

problem #9

Apr 062010

Trailblazer 6-cyl

  • 67,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated while driving at approximate speeds of 60 mph, the vehicle stalled. The fuel level gauge indicated there was half a tank of fuel in the vehicle yet the tank was empty. The failure would occur intermittently and because she was unable to determine the exact amount of fuel in the vehicle, she would fill the tank completely within every 200 miles. The vehicle had not been to the dealer for a diagnostic or repairs. The approximate failure mileage was 67,000 and the current mileage was 68,000. Updated 12/02/10 updated 12/07/10

- Lake Havasu City, AZ, USA

problem #8

Jul 052009


  • 60,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact was driving approximately 45 mph, and observed that the fuel gauge displayed empty or a reading level close to empty. Whenever the vehicle was in operation, the failure fluctuated at any given speed being traveled. The vehicle has not been repaired for the malfunction. The failure mileage was 60,000. The current mileage was 72,425.

- Beverly, MA, USA

problem #7

Dec 032008


  • Automatic transmission
  • 100,308 miles


The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the fuel gauge does not work and always registers zero. Whenever he fills up the gas tank, the fuel gauge dial does not move from empty to full. The dial remains on empty and the fuel light is constantly illuminated. The contact found numerous complaints from other consumers who experienced the same problem. However, the dealer has not been notified. The failure mileage was 100,000. Updated 01/07/09. Updated 01/08/09.

- Largo, FL, USA

problem #6

Nov 152007

Trailblazer 6-cyl

  • Automatic transmission
  • 38,000 miles
Fuel gage has failed and does not work... failed at 38000 miles... purchased car December 2005 with 13,500 miles from dealer...current ownership two years... low fuel light stays on even when tank filled...gage will sometimes vary between "E" and 3/4 full... most of the time staying on "E",...absolutely cannot tell how much gas is in car from the gage. More than one person drives the car and it is going to leave someone from my family stranded on the road at some point. I went to the dealer and complained and was told that it would cost between $350 and $500 to repair, that the fuel sending unit has failed...that gas tank would have to be dropped to replace... however "just keep driving the car until the fuel pump fails and replace the pump and the sending unit assembly at that time, saving the extra cost..." "keep track of your mileage"...which varies between city and highway driving... not exactky what I want to hear!!!

- Fayetteville, NC, USA

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problem #5

Jan 042008

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 101,000 miles
I have a 2005 Trailblazer, at 105,000 miles I had to replace the fuel sensor, its the 3rd fuel senor since the vehicle was manufacturered.

- Algonquin, IL, USA

problem #4

Jan 032008

Trailblazer 6-cyl

  • Automatic transmission
  • 55,000 miles


In recent months my fuel guage indicator light is showing low fuel even after the vehicle has been fueled to capacity. After speaking a with several other Chevy Trailblazer owners, I have discovered that they are, or have experinced the same problem. I was advised by one of the owners that there was a problem with the fuel sensor. The cost to replace this item through the dealership was between $350-$450. After reading the complaints on this website and speaking with other Trailblazer owners. One can conclude that this it a factory, workmanship defect; and the consumer should not be held responsible for repair or replacement. Finally as of this complaint I have not repaired the fuel sensor.

- Lake Park, FL, USA

problem #3

Jul 152007

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 40,000 miles
My head lights and dash board lights dim and flicker. My fuel gauge is never correct it will show empty right after a fill-up.

- Hickory Hills, IL, USA

problem #2

Mar 102006

Trailblazer 4WD 6-cyl

  • Automatic transmission
  • 26,000 miles
The fuel sensor that works the gas gauge had to be repaired twice.

- Manalapan, NJ, USA

problem #1

Apr 052007

Trailblazer 6-cyl

  • Automatic transmission
  • 42,500 miles
The sending unit for the fuel gauge on my 2005 Chevy Trailblazer failed and had to be replaced at a cost to me of $400. When my repairer called the dealer for the part, he was told he had to wait a day as the part was not in stock, because the had sold out of them and there had been a "run" on this individual part. This would lead me to believe that the part failure is not random but that it was defective and others were experiencing the same problem as I.

- Boynton Beach, FL, USA

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