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.


really awful
Crashes / Fires:
4 / 9
Injuries / Deaths:
3 / 0
Average Mileage:
62,068 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 electrical problems

electrical problem

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2005 Chevrolet Trailblazer Owner Comments (Page 8 of 21)

« Read the previous 20 complaints

problem #261

Nov 292011

Trailblazer 4WD 6-cyl

  • 71,050 miles


The speedometer in my vehicle suddenly shows over 120 mph no matter what speed I am traveling. I have found this to be a common complaint. The fuel gauge is also very inaccurate never showing more than 1/4 tank of fuel regardless of how much I put in.

- Lexington, SC, USA

problem #260

Nov 252011

Trailblazer 6-cyl

  • 88,900 miles
The speedometer at any given moment will go haywire. Will read over or under what speed you are actually driving. This is caused by a faulty instrument cluster. Safety concern is that you do not notice right away that the speedometer is out of whack so you don't know how fast you are actually going, leaving you vulnerable to driving too fast for road conditions and potentially causing a very serious accident. This is a known problem in the 2005 Chevy Trailblazer and GM will do nothing to repair this.

- Yucaipa, CA, USA

problem #259

Aug 022011

Trailblazer 6-cyl

  • miles
The Trailblazer I bought seem to be more of a headache the a sport vehicle. I wish I had look better at all the information the was out there. I will not purchase another one, or recommend this vehicle to anyone. Sorry I bought it.

- Wingdale, NY, USA

problem #258

Jun 092011

Trailblazer 6-cyl

  • 50,000 miles


My speedometer all of a sudden jumped to over 70mph when I was only going about 30mph. Since June of this year it has happened numberous times. Now it just sits at the bottom of the speedometer when it is turned off.

- Dewey, OK, USA

problem #257

Nov 132011

Trailblazer 4WD 6-cyl

  • 116,176 miles
Blower fan stays on constantly even when is cut off. Only way to cut off fan is to pull out module in fuse box under hood.:(

- Blacksburg, SC, USA

problem #256

Mar 052010

Trailblazer 6-cyl

  • 87,000 miles
The fuel gauge went out in my vehicle. My speedometer is doing the same thing and my oil gauge. How is that not a safety recall! called they said there was no recall. Received a notice that they would pay half of repair for the fuel gauge. After warranty was up.

- Willow Wood, OH, USA

problem #255

Apr 192011

Trailblazer 6-cyl

  • 75,863 miles


I was driving on the freeway when I noticed my speedometer suddenly went to 100 miles an hour. I knew this could not be the case as my gps showed I was traveling at 55mph. It then went to 120miles an hour and flip. Flopped back and forth. I went to the Chevrolet dealership and they informed me it was the electrical cluster and even though there were many complaints, Chevrolet would not pay for it. The cost to me would be over $500 I live on a small social security check, so could not afford to repair it. Next at 85,000 miles the fuel gauge went haywire and would not register any fuel although I would fill it completely. Also, the lights blink off and on when I am driving at night, so, I am afraid I will be stranded somewhere in the dark with my car quitting all together. This was my last car purchase before I retired and I am just sick that the Chevrolet company will not fix these defects...they fix the same cluster in their Chevrolet trucks....why not in the cars? by the way, I just got a letter last week saying they would "split the cost " to fix the fuel gauge...(my cost is $200 1/3 of my social security check!!

- Winterville, GA, USA

problem #254

Oct 232011


  • 129,000 miles
The SUV was going about 40 mph when the instrument panel showed 120 mph... it will not go back to normall... it does now show 100mph even with the car off.

- New Market, AL, USA

problem #253

Oct 032011


  • 80,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that the fuel gauge was inoperable and the speedometer was permanently stuck at 20 mph. In addition, the fuel warning light was constantly illuminated despite how much fuel was in the vehicle. The vehicle was not inspected. The current mileage is 82,000 and the failure mileage was 80,000 updated 11/16/11

- Johnstown, PA, USA

problem #252

Aug 312011

Trailblazer 6-cyl

  • miles
My speedometer began to work improperly. Sometimes it would not go all the way back to zero when the ignition was switched off, or it would be functioning properly and then for no apparent reason the needle would go all the way around and end up pointing at the park, neutral, reverse area at the bottom of the speedometer. Now the speedometer does not work at all and the tachometer has started to work intermittently. It is doing the same thing that the speedometer was doing. Right now the vehicle is off but the tachometer needle is on 3. I just had the fuel sensor gauge replaced under Chevrolet's "special policy" because it had ceased working as well. I have serious reservations about the integrity of the other gauges because while they appear to be working I do not know. I contacted cheverolet and was told that while other makes and models had been recalled mine had not. When I inquired as to whether the components for my instrument cluster came from the same supplier as that of the recalled vehicles I was told that they would not disclose that information to me because it was confidential. They did say they had other complaints similar to mine but at this time they were not offering any assistance to consumers and did not know if or when they ever would. I was told that due to the age of my vehicle (a 2005) that I could expect certain repairs. I do expect certain repairs however a total failure of the instrument cluster, that has been documented on my make and model as well as other Chevrolet, is not one of them. It is frustrating and disheartening to me that while Chevrolet is aware of the problem they knowingly disregard the concerns of their customers, especially as the malfunction of a fuel gauge, speedometer or any other instrument panel component could have serious consequences.

- Hempstead, TX, USA

problem #251

Oct 032011

Trailblazer 6-cyl

  • 66,000 miles


I have been hearing a clicking noise and my car had begun sounding like a jet engine taking off for the last 3 days - very noisy. I took it to pep boys where I was told that it is normal for the Trailblazer to begin making this noise shortly after 60K miles. I was told the serpentine belt needed to be replaced, tensioner pulley and the idler pulley. I had the new parts installed. None of my warning lights came on the dashboard so I assumed was well as there was no other indication that something was wrong. Driving my car within 24 hours of being fixed, the fan clutch seized and my water pump burst causing car to overheat in the middle of an intersection where my car then stalled putting me and my children at risk for injury. The car almost caught on fire it was smoking severely. Someone helped me move my car out of the busy intersection and I called my husband and a tow truck to come get the car. When I got home and looked up the problems again on the dealer website, I found hundreds of forums where the fan clutch has been mentioned and the water pump too. A fan clutch according to the mechanics I surveyed stated they should last at least 100K or more. This has been brought to GM and they ignore it. It is a safety issue. Additionally, my speedometer hasn't worked for at least a year and when I called Chevy they wanted to charge me $700 to replace it when it is not my issues. I didn't cause it. Not knowing what speed you are going is definitely a safety hazard and can cause accidents or tickets.I am attaching a forum (this is just one of hundreds I found online) where people are having the same safety issues I am and GM has ignored them. My car could have caught on fire today and I had my 4 yr old daughter with me. Not a position I ever want to be in. Please issue a recall.

- Chandler, AZ, USA

problem #250

Mar 092011

Trailblazer 6-cyl

  • 56,651 miles
Faulty speedometer - reads 60mph when at a stop - under warranty - dealership replaced instrument cluster panel current problems - gas gauge reads empty when tank jus filled, lights dim and brighten intermittently, replaced battery 9/2011 thinking problem with battery when car just died on me, check engine light just goes off and on, replaced front left head lamp and within 1 week the same bulb is dead.

- Richmond Heights, OH, USA

problem #249

Nov 092010


  • 60,000 miles
Just one day we got in the car to head to the grocery store and as we were heading there I looked down and the speedometer was at 20 when I was clearly doing 55. I pulled up to a stop light and shut the car off then restarted hoping it would fix itself and nothing. I has never worked right since then. I went to the local Chevy dealer and asked to see if there were any recalls on this issue and they told me that there are recalls on every Chevy SUV and truck except Trailblazer and told me to input a complaint to see if they would recall this issue. I asked them how to do that and they said to contact Chevy. They were not helpful. The bull**** thing is that every Chevy truck and SUV from 2003 to 2007 use the same instrument panel so you can't tell me that this paticular vehicle is not like the Tahoe, suberban, or Silverado that has the same issue as I am having. I am pissed that I have to pay for a faulty part that Chevy knows is an issue.

- Springfield, IL, USA

problem #248

Sep 192011

Trailblazer 4WD 6-cyl

  • 75,000 miles
While driving this morning on the highway, my speedometer stopped working. Now the gauge is point down and will not register.

- Worcester , MA, USA

problem #247

Sep 132010

Trailblazer 4WD 6-cyl

  • 90,000 miles
Fuel guage quit working.

- Rogersville, MO, USA

problem #246

Dec 012009


  • 7,600 miles
First was the right tail light caught fire and blew fuses, then I get power surges that cause the vehicle to accelerate randomly at the worst times and/or will also stall out, which can be potentially very dangerous or end in a fatal accident, it drops in rpms and lights dim then it accelerates... and the last thing is that the fuel gauge fluctuates dramatically and you can never tell how much fuel you really have... drive 10 miles at quarter of a tank and it either stays close to the same spot or drops and the light comes on for low fuel.

- Monongahela, PA, USA

problem #245

Jan 152011


  • 81,000 miles
The contact owns a 2005 Chevrolet Trailblazer. While driving various speeds, the contact noticed that the speedometer would fail intermittently and the oil gauge failed completely and would not provide a reading. The vehicle was taken to the dealer for diagnostics where the technician advised that the instrument panel cluster had to be replaced. The vehicle was not repaired. The approximate failure mileage was 81,000.

- Opp, AL, USA

problem #244

Aug 152011


  • 51,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated that while driving approximately 75 mph, she noticed that the speedometer would display higher speeds. The vehicle was taken to an authorized dealer and they stated that the speedometer needed to be replaced. The vehicle was not repaired. The manufacturer had not been notified. The failure mileage was approximately 51,000.

- Tuscon, AZ, USA

problem #243

Dec 072007


  • 54,000 miles
The contact owns a 2005 Chevrolet Trailblazer. The contact stated the entire instrument panel would operate intermittently. In addition, the fuel gauge and odometer displayed inaccurate readings while driving. The vehicle was taken to an authorized dealer who stated the instrument cluster would need to be replaced. The vehicle was not repaired. The approximate failure mileage was 54,000.

- Lewisburg, TN, USA

problem #242

Aug 102011


  • 66,500 miles
Fuel gauge has failed. Gauge reads empty, even though fuel tank is full. There are sporadic fluctuations of the needle, but gauge is no longer reliable for determining fuel level in the vehicle. Numerous reports of similar failures in the Chevy Trailblazer / GMC Envoy line of vehicles indicate it is a failure of the fuel sending unit.

- Herndon, VA, USA

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