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:
62,288 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 9 of 22)

« Read the previous 20 complaints

problem #268

Feb 272011

Trailblazer 4WD 6-cyl

  • 55,000 miles


Fuel gauge is constantly on empty. Dings constantly. Fill it often because I don't know if it will shut off on me in the middle of the road or not. I have tried putting in 5.00 or filling the tank. It never goes to full on the gauge. It is getting worse, used to go to half, now only goes to quarter full even when I fill it up.

- Hortonville, WI, USA

problem #267

May 102009

Trailblazer 4WD 6-cyl

  • miles
Shortly after the manufacturer's warranty expired, the fuel level sensor of my 2005 Chevy Trailblazer stopped working properly. The gas gage reads empty even when the tank is full. It occasionally moves from empty to 1/4 tank, 1/2 tank, then back to empty again. I was advised by the dealer that it would cost approximately $500 to fix. I never know exactly how much fuel is in the tank, so I find myself going to the gas station almost every other day. I have been stranded on side of the highway a few times (thank goodness for roadside assistance). However, it is very disheartening to know that this is a common problem with this vehicle and nothing is being done to ensure that GM is being held accountable for the quality of their parts.

- Baltimore, MD, USA

problem #266

Jul 012010


  • 65,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the fuel gauge displayed an improper reading while driving various speeds. The vehicle was not taken to the dealer for diagnostic testing or to be repaired. The manufacturer was notified, but they offered no assistance. The failure mileage was 65,000. The VIN was unavailable.

- Ashland, OH, USA

problem #265

Feb 012011

Trailblazer 4WD 6-cyl

  • 95,000 miles


I have a 2005 Trailblazer that sometime the gas guage works and sometimes it won't. I have talked to several other people with 2005 Trailblazer and they have the same issue.

- Wagoner, OK, USA

problem #264

May 272011


  • 101,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated the fuel gauge displayed the incorrect reading and the fuel light indicator displayed that the fuel was low when the fuel tank was full. The vehicle was not taken to the dealer for diagnostic testing. The vehicle was not repaired. The failure mileage was 101,000 and the current mileage was 101,200.

- Islandia , NY, USA

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problem #263

May 012011

Trailblazer 4WD 6-cyl

  • 68,000 miles
I have a 2005 Chevy Trailblazer. I have had multiple "known" problems with it. The most recent issue is with the gas gauge. When I fill my tank, the gauge shows as empty and dings at me for a few days and then will suddenly jump to 3/4 of a tank. Also, I watch my mileage because I normally refill my tank around 300 miles and it seems to still show that I have 1/4 of a tank at 300 miles. Unless I'm suddenly getting much better gas mileage, this isn't possible, so I fill my tank to be safe. I'm being told this is yet another "known" issue and it will cost another $800 to fix it. I've had 3 "known" issue in the last year and each of them seem to cost $800 to fix. If I run out of gas with my child in the car, it could be very dangerous since most of my driving is done on the interstate or expressway.

- Omaha, NE, USA

problem #262

Nov 102010


  • 60,000 miles


I have a 2005 Chevy Trailblazer. The fuel system gauge is malfunctioning. I ran out of gas on a busy street twice before the system completely failed and I realized the issue was with the gauge. I have contacted GM and dealers and they say it is not a safety issue so there is no recall. This is a pervasive problem and a manufacturing defect and certainly has the potential to create serious safety issues if your vehicles stalls on any busy street. Dealers will fix the problem for $600-$800.

- Gardner, KS, USA

problem #261

Mar 202010


  • 86,000 miles
Purchased a 2005 Trailblazer after trading in a 2001 Blazer. I have never had any problems with Chevrolet until this upgrade. Not long after the purchase I started running out of fuel and the car would stall in the middle of the road. In my opinion the stalling gets serious when you live in a large city and traffic moves fast. It is also very difficult to make it off the road when you do not know you have a problem like this as well. It wasn't until I began tracking my mileage and having it inspected that I found it was the fuel sensor. Roughly it will cost about 700 dollars to fix. I am still, at this point, tracking my mileage which is a headache in itself. I have spoke with the dealership more than once and they made it clear that this is a very common issue with this vehicle and that is also my problem. I will be rethinking my next vehicle and my husbands as well since he owns a 2003 Impala.

- Fort Wayne, IN, USA

problem #260

Jun 142011

Trailblazer 4WD 6-cyl

  • 78,144 miles
2005 Chevy Trailblazer. Faulty gas gauge. Was fine today 6/14,2011 until I filled up. Gauge went from full after filling to showing empty and has not rest itself. Noticed in past that it seemed to be stuck at 1/4 tank but took almost 20 gallons to fill. Gauge reset after a few miles and seemed to be fine until today. And now today, gas gauge reads empty on a full tank.

- Virginia, VA, USA

problem #259

Aug 082010

Trailblazer 6-cyl

  • Manual transmission
  • 97,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the catalytic converter warning light was illuminated and the vehicle was taken to the dealer. The dealer advised that the catalytic converter would need to be reset but not repaired. The dealer reset the catalytic converter however the reset was only a temporary repair. One year later, after refueling the vehicle, the fuel level sensor failed. The vehicle was not repaired. The failure mileage was 97,000 and the current mileage was 105,000.

- Pheonix, AZ, USA

problem #258

Mar 012011

Trailblazer 4WD 6-cyl

  • 68,000 miles


We own a 2005 Chevy Trailblazer and the gas gauge is not working. When we put fuel into the tank it registers on full then quickly will go down to empty. The gauge will then go up to half or a quarter then back to empty. Therefore you are never really sure of the amount of gas there is in the tank. We try and watch the mileage to use that as a guide but when we are constantly putting in a couple of gallons just be sure we have gas we lose track. I am so afraid that I or one of my family members will be stranded from running out of gas. I tried contacting Chevrolet but was unsuccessful in any kind of resolution. I have researched this problem online and found many instances of Trailblazer owners with the same problem.

- Brunswick, OH, USA

problem #257

Feb 102011


  • miles
The fuel level sensor went bad on my 2005 Chevrolet Trailblazer causing me to run out of gas twice so far. Once I was on a rural road, the second time I was on the thruway and almost caused an accident with my two young children in the car.

- Irving, NY, USA

problem #256

Mar 012011


  • 82,000 miles
Gas gauge does not accurately account for what is in the fuel tank. After filling the tank up with gasoline the gauge will go to empty and the low fuel light will come on. The gauge will move from full to empty periodically. Have been using the digital fuel used readout to gauge when I need to refuel.

- Ypsilanti, MI, USA

problem #255

Jun 022011


  • 84,565 miles
While driving down highway, fuel gauge began moving radically from empty to full and never stabilized. Each time the gauge approached the "empty" the warning light and alarm would sound. Constant movement of fuel gauge and alarm is distracting to driver. Inaccurate fuel measurement causes concern for diver which is an unnecessary distraction from driving that could lead to accident.

- Alexandria, AL, USA

problem #254

Jun 012011

Trailblazer 4WD 6-cyl

  • 90,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the fuel gauge constantly displayed an inaccurate reading. The vehicle was taken to an independent repair shop where the contact was informed that the fuel sending unit needed to be replaced. The vehicle was not repaired. The failure mileage was 90,000 and the current mileage was 104,000. Updated 07/20/11 the consumer stated he ran out of fuel on three occasions. The consumer stated the fuel gauge read full, when there was no gas and it read empty, when there was gas. Updated 12/02/11

- Galesburg, MI, USA

problem #253

Nov 012009


  • 70,000 miles
Erratic fuel gauge, reports no fuel even when fuel available, reports 1/4 tank of fuel available and no fuel may be available or I may have just filled the tank; also reports no fuel or low fuel when tank has been filled. Vehicle has stalled out and would not start; was out of fuel but gauge indicated 1/4 tank of fuel. Oil gauge has also become erratic; and goes from showing no oil pressure to low oil pressure to very high pressure. Have to pull over immediately and check oil level at side of road or where ever available to do so at time. Not always safe area to pull off. Both issues create very hazardous and dangerous situations for the driver and passengers in the vehicle.

- Huntingtown, MD, USA

problem #252

May 312011

Trailblazer 4WD 6-cyl

  • 109,760 miles
2005 Chevrolet Trailblazer consistently register incorrect fuel level causing an unsafe condition where the driver cannot determine current fuel level. Gauge instantly reads empty upon filling, and then moves erratically while driving. This condition is unsafe as it can cause the engine to stall at speed while in traffic. This according to research is a common problem in this vehicle and like GM models.

- Hubert, NC, USA

problem #251

Oct 202010


  • 50,000 miles
The contact owns a 2005 Chevrolet Trailblazer. While driving approximately 35 mph the speedometer began to move erratically. The speedometer reading fluctuated and displayed the incorrect speeds. The fuel gauge also did not display the accurate amount of gasoline in the fuel tank. The vehicle was taken to the dealer where the technicians stated the fuel level sensor and the instrument cluster needed to be replaced. There was an open investigation under NHTSA action number: DP10001 (fuel system, gasoline:delivery:fuel pump) which may be related to the failure. The manufacturer was made aware of the failure and agreed to cover the repair cost for the instrument cluster. The vehicle was not repaired. The approximate failure mileage was 50,000.

- Akron, OH, USA

problem #250

May 232011


  • miles
2005 Trailblazer gas gauge is broken, fills up and then it will light up like it is empty, only reads the gas up to 1/4 of a tank.

- Newport News, VA, USA

problem #249

Jun 252010


  • 95,000 miles
While driving on the expressway the gas gauge indicator beeped indicating that I was low on fuel. I was not sure when I filled up last so I stopped and filled up with gas. After filling up with gas, I restarted the vehicle, the gas gauge still read empty. Two months prior to this I had to replace the instrument cluster on the dash (speedometer, etc), so with this being the case, I determined that the gas sending unit was faulty or broken. From what I read, the cost to fix this varies from $650 to $850. I've put off this repair since I find that many people have the same problem and have heard news reports about a possible recall for this. Basically now, the gauge is never correct and fluctuates between empty & 1/4 of a tank. It will drop or rise multiple times in a 20 mile trip.

- East Lansing, MI, USA

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