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:
1 / 35
Injuries / Deaths:
3 / 0
Average Mileage:
65,832 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.

2007 Chevrolet Trailblazer electrical problems

electrical problem

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2007 Chevrolet Trailblazer Owner Comments (Page 1 of 9)

problem #170

Nov 022016


  • 112,000 miles


My low bean head lights stopped working. 2006/2007 Trailblazers had a recall for the head light module. The dealership charged me for the repair. However, I'm told my car doesn't qualify for the recall. Its the same make model and year.

- Bartonville, IL, USA

problem #169

Sep 112016


  • 96,000 miles
My head lights and day time running lights will not turn on.

- Owensboro, KY, USA

problem #168

Aug 102016


  • miles
Driving as normal, when stopped at a stop light, rough idle to completly shutting off and throwing enine codes. This has happened multiple times and found out today that the fuse block is trashed.

- Chalfont, PA, USA

problem #167

Aug 012016


  • miles


Vehicle was parked for a few hours when went to start up to leave both low beam headlights/daytime running lights suddenly went out and have not come back on. Fuses are good and bright lights work also low beam bulbs are good.

- Mt. Pleasant, NC, USA

problem #166

Jul 252016


  • 110,000 miles
The contact owns a 2007 Chevrolet Trailblazer. The contact stated that there was an electrical short and the front passenger side low beam light failed to illuminate. The contact replaced the bulb, but the failure recurred. The second time, the front passenger and driver side low beam lights failed to illuminate. The VIN was not included in NHTSA campaign number: 15V599000 (visibility). The manufacturer was notified of the failure and provided no remedy. The approximate failure mileage was 110,000.

- La Grange, IN, USA

problem #165

Jul 202016


  • miles
Recall number 14V755000 recall date 11/26/2014 component exterior lighting:headlights summary General Motors llc (GM) is recalling certain model year 2006-2009 Buick lacrosse, 2006-2007 Buick rainier, Chevrolet Trailblazer, GMC Envoy, 2006 Chevrolet Trailblazer ext, GMC Envoy XL, 2006-2008 Isuzu ascender, and Saab 9-7X vehicles. In the affected vehicles the headlamp driver module (hdm) may overheat and fail, causing the headlamps and daytime running lights to then fail and not illuminate. 2007 Trailblazer is being recalled for lighting issues. My 2007 Trailblazer is experiencing same issues but I was told by gmail that mine was not one recalled

- Mc Cutchenville, OH, USA

problem #164

Jul 102016


  • 44,000 miles


Was driving at night and another vechile beside me told me I had no lights.the low beams aren't working, the high beams are fine.I was in motion at the time.but stopped at a red light.I was on a city street, going straight.

- Norfolk, VA, USA

problem #163

Jun 162016


  • 120,000 miles
While driving on the highway the loe beam lights flickered on and off and shut off for a couple of seconds. The driver door window switch continually malfunctions while driving and stationary windows won't roll up or down and the fuel level gauge works sometimes and other times it won't

- Columbus, OH, USA

problem #162

Aug 152015


  • 110,000 miles
All interior and exterior lights flash every second when engine RPM at 2000 and above. Radio occasionally has noise that changes with engine RPM, also stepping on brake pedal causes clicking noise over speakers when radio is playing. Service charging system warning on driver's console when temperature 80 degrees and above. Flashing started after Chevy dealer replaced the underhood bussed electric center (ubec) which was suppose to resolve the service charging system warning and transmission interlock solenoid failing to let truck out of park.

- Carroll Plantation, ME, USA

problem #161

Jun 142016


  • 131,000 miles
Bad blower motor resistor. The A/C completely shuts off when switched to position "5" on fan speed. I just replaced this part about a month ago. It has been working fine since I replaced it. The same thing is happening again now. The fan shuts completely off when in position "5". this needs to be recalled. There is something wrong with the design of the electrical system. I am worried that this will eventually cause a fire from malfunctioning. Yet another problem with this vehicle.

- Knoxville, TN, USA

problem #160

Feb 082016


  • 72,000 miles


The contact owns a 2007 Chevrolet Trailblazer. The contact stated that the ignition switch malfunctioned and caused all of the instrument panel lights to illuminate. In addition, the brake bell sounded without warning. The vehicle was repaired, but the issue recurred. The manufacturer was not made aware of the issue. The failure mileage was 72,000.

- Buffalo, NY, USA

problem #159

Feb 212016


  • 106,000 miles
About 3 weeks ago I lost power and all dash lights were flashing. Pulled to side and restarted without problem. Yesterday, I had SUV in for new tires and when they went to back out of the bay smoke came from the steering column. When they tried again, the ignition switch is dead, no dashboard lights. Disconnected battery to prevent a fire and am towing to Chevrolet dealer.

- Streamwood, IL, USA

problem #158

Feb 172016


  • 140,000 miles
At a red light and attempted to close the driver's side electric window. When I pressed the buttom to raise the window the window stopped raising to a closed position and heard a loud noise similar to glass crumbling inside driver door. Is the regulator covered under a recall. I previously had the driver's door master power window switch module replaced due to a recall. I have always had problems with the driver's side window mechanism always slowing down and stopping midway during cold temperatures.

- Littleton, CO, USA

problem #157

Dec 032015


  • 162,000 miles
The contact owns a 2007 Chevrolet Trailblazer. The contact stated that after the vehicle had been parked for several hours, smoked started to emit from the vehicle. The contact was able to extinguish the fire. A fire report was not filed and no injuries were reported. The vehicle was taken to an independent mechanic where it was diagnosed that an electrical failure within the driver side door caused the vehicle to catch on fire. The vehicle was not repaired. The contact also stated that the vehicle was previously repaired under NHTSA campaign number: 15V599000 (visibility). The manufacturer was made aware of the failure and offered to buy back the vehicle. The failure mileage was 162,000.

- Jacksonville, NC, USA

problem #156

Nov 102015


  • miles
There is time the key will keep turn engine over even when you let go of key, #2 headlamp and daytime driving lite sometimes won't won't work properly. And the last thing is my driver side master doesn't work properly when it rain.

- Newfield, NY, USA

problem #155

Oct 142013


  • 70,157 miles
The contact owns a 2007 Chevrolet Trailblazer. The contact stated that while driving 35 mph, the low beam headlights failed without warning. The contact then was required to activate the headlights to high beam. The vehicle was taken to a dealer where it was diagnosed that the headlight module needed to be replaced. The vehicle was repaired. The manufacturer was made aware of the failure. The failure mileage was 70,157....updated 03-10-16

- Southampton, PA, USA

problem #154

Apr 012012


  • miles
The ignition will not turn off unless the bright lights are on. At times, it will start automatically even when the ignition switch is turned off. Sometimes the ignition will not turn on or off at all. Fuel system is faulty. Consistently problems have caused the fuel pump to go out repeatedly, and the fuel gauge to stop working. Motor in the drivers seat stopped working after months of problems. The radio has stopped working. We've replaced the fuse, and have been told its an electrical problem.

- Houston, TX, USA

problem #153

Sep 142015


  • 95,000 miles
My 2007 Chevrolet Trailblazer had low beam headlights not working when I turn them on. I have to drive at night with high beam lights (they work fine) and I am very annoying to other drivers. I had vehicle checked out and fuses and light bulbs appear fine. I understand this is a common occurrence. I need it fixed.

- Kuna, ID, USA

problem #152

Sep 012015


  • 103,500 miles
Solid state relay module for low beam - high beam headlights. When driving at night, both low beam headlights went out at the same time. Was able to switch to high beams to continue home, but not without blinding other vehicles. Replaced the solid state relay at a local autozone store. This relay is a single point failure, which an un-experienced driver could have had a possible accident if the person did not know what to do quickly in a calm manner.

- Hamburg, NY, USA

problem #151

Jun 212015


  • 125,726 miles
I parked my 2007 Chevrolet Trailblazer in my driveway Sunday 6/21/2015. I received a call an hour later from my neighbor that my lights was still on. I always have my lights set that when you get out of the vehicle they go off automatically. Tried to turn off the lights with no luck. I smelled electrical burning coming from the engine area. Found the fuse box in the engine bay and noticed that the hdm module #45 was completely melted. When I took the car to the auto shop, not only did they find that the hdm module #45 was melted, it had ruined the main fuse circuit board from the heat. Luckily this happened during the daylight and not at night, because I wouldn't have had headlights very long with this module being melted. Also this could have easily started a fire in the engine bay with the amount of heat that was coming off of the melted hdm module. This I believe is a safety problem in the Trailblazers and should be recalled.

- Nampa, ID, USA

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