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 / 3
Injuries / Deaths:
0 / 0
Average Mileage:
62,600 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.

2006 Chevrolet Trailblazer electrical problems

electrical problem

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2006 Chevrolet Trailblazer Owner Comments

problem #5

Aug 012016


  • 112,000 miles


The contact owns a 2006 Chevrolet Trailblazer. The contact stated that the wiring harness melted the tail lamp circuit board. In addition, when using the turn signals, the indicator fluctuated abnormally fast. Upon inspection, the exterior lighting did not work. The failure occurred without warning. The dealer confirmed that the wiring harness malfunctioned, and the circuit board and wiring harness assemblies needed to be replaced. The manufacturer was notified of the failure. The failure mileage was approximately 112,000.

- Beebe, AR, USA

problem #4

May 042010

Trailblazer 4WD 6-cyl

  • 65,000 miles
The contact owns a 2006 Chevrolet Trailblazer. While driving at approximately 35 mph, the headlights failed to illuminate. The vehicle was taken to a dealer, where it was diagnosed that the wiring was burned and needed to be replaced. The vehicle was repaired. The contact stated that the failure recurred several times. The manufacturer was made aware of the failure. The failure mileage was 65,000. Updated 5/15/15 updated 05/26/15

- Pittsburgh, PA, USA

problem #3

Jun 022014


  • miles
The contact owns a 2006 Chevrolet Trailblazer. The contact stated that the check engine warning light remained illuminated. The vehicle was taken to the dealer who discovered burnt wires. The vehicle was not repaired. The manufacturer was not notified. The failure mileage was unavailable.

- Tawas, MI, USA

problem #2

Jul 172012


  • 41,000 miles
The contact owns a 2006 Chevrolet Trailblazer. The contact stated that while driving 15 mph, there was a smoke smell coming from the driver's door. The contact noticed smoke coming from inside the main switch door panel. After opening the main switch door panel, the contact noticed that all of the switches were melted inside of the door. Neither the dealer nor the manufacturer were notified of the failure. The failure mileage was 41,000.

- Brandon, FL, USA

problem #1

Jul 152011


  • 95,000 miles
There was a burning smell in the car and then the high setting on the air fan speed stopped working. Then about a month later the second to highest speed stopped working also. I opened my glove when my wife was driving and then the highest setting started working again, then stopped working a few minutes later. I looked in the dash behind the glove box and found that there was a connector for the fan motor controller was heating up and started melting. I checked the connection and inside the connector was burnt and blackened. I contacted General Motors about my 2006 Chevrolet Trailblazer. They setup an appointment at the nearest Chevrolet dealer and had it checked. They found that the fan motor connector was bad and that the fan motor controller was bad also, they contacted General Motors and told them it wasn't a defect and it was not a safety hazard. I cannot believe that the connector almost catching fire is not a fire hazard or a defect. They wanted to replace the connector and the motor controller. I denied the service because they wanted to charge me $365 to do so. When I found the parts elsewhere for $75 and im going to do the repairs myself. I have pictures of the burnt connector and fan motor controller. I will be repairing the issue once the parts are delivered. I am also experiencing the fuel level problem also, the fuel gauge says its empty when I fill it up.

- Heber City, UT, USA

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