2007 Chevrolet Trailblazer Electrical System Problems
Owners have filed 200 complaints with NHTSA about electrical system problems on the 2007 Chevrolet Trailblazer, 27% of all complaints for this model year. Half of the reports with a mileage happened before 77,000 miles. The words owners use most often: “fuel gauge” (13% of reports).
- 200electrical system complaints
- 77,000median miles at failure
- 3mention a crash
- 5mention an injury
- 2related recalls
- 48%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- Fuel gauge: mentioned in 25 of 200 complaints (13%)
- Window switch: mentioned in 19 of 200 complaints (10%)
- Door module: mentioned in 14 of 200 complaints (7%)
- Low beam: mentioned in 10 of 200 complaints (5%)
At what mileage do electrical system problems happen?
Based on 157 complaints that reported the odometer reading.
How serious are the reports?
Of 200 complaints, 3 mention a crash, 39 a fire, 5 an injury.
Chevrolet Trailblazer electrical system complaints by model year
| Model year | Electrical System complaints | Share of that year | Median miles |
|---|---|---|---|
| 2026 Trailblazer | 4 | 36% | 20,000 |
| 2025 Trailblazer | 14 | 56% | 36,800 |
| 2024 Trailblazer | 11 | 33% | — |
| 2023 Trailblazer | 16 | 23% | 49,000 |
| 2022 Trailblazer | 31 | 28% | 44,000 |
| 2021 Trailblazer | 41 | 21% | 12,500 |
| 2009 Trailblazer | 9 | 33% | 80,000 |
| 2008 Trailblazer | 65 | 34% | 76,000 |
| 2007 Trailblazer | 200 | 27% | 77,000 |
| 2006 Trailblazer | 251 | 23% | 89,000 |
| 2005 Trailblazer | 617 | 42% | 70,000 |
| 2004 Trailblazer | 627 | 58% | 65,527 |
| 2003 Trailblazer | 285 | 32% | 80,000 |
| 2002 Trailblazer | 181 | 16% | 70,500 |
| 2001 Trailblazer | 2 | 10% | 148,937 |
| 2000 Trailblazer | 1 | 4% | 131,000 |
When owners reported it
Related recalls (2)
Visibility:power window devices and controls; electrical system
Problem: General Motors (GM) is recalling certain model year 2005-2007 SAAB 9-7x; 2006 Chevrolet Trailblazer EXT and GMC Envoy XL; and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier and Isuzu Ascender vehicles. Fluid may enter the driver's door module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. The short may also cause overheating, which could melt components of the door module, producing odor, smoke, or a fire.
Risk: A short in the circuit board could lead to a fire, increasing the risk of personal injury. A fire could occur even while the vehicle is not in use. As a precaution, owners are advised to park outside until the remedy has been made.
Fix: Owners will be contacted and dealers will test the driver's door module. If the module is functioning properly, a protective coating will be applied. If the module is not functioning properly, it will be replaced. These repairs will be done free of charge. GM will notify Buick, Chevrolet, and GMC owners, Isuzu and Saab will contact their respective owners. The recall began on August 2, 2013. Buick owners may contact the owner center at 1-800-521-7300, Chevrolet owners at 1-866-694-6546, GMC owners at 1-866-996-9463, Isuzu owners at 1-800-255-6727, and Saab owners at 1-800-955-9007. GM's campaign number is 12180. This recall is an expansion of recall 12V-406.
Visibility:power window devices and controls; electrical system
Problem: General Motors (GM) is recalling certain model year 2006 Chevrolet Trailblazer EXT and GMC Envoy XL and 2006-2007 Chevrolet Trailblazer, GMC Envoy, Buick Rainier, SAAB 9-7x, and Isuzu Ascender vehicles, originally sold or currently registered in Connecticut, Delaware, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia, Wisconsin, and the District of Columbia. Fluid may enter the driver's door module, causing corrosion that could result in a short in the circuit board. A short may cause the power door lock and power window switches to function intermittently or become inoperative. The short may also cause overheating, which could melt components of the door module, producing odor, smoke, or a fire.
Risk: A short in the circuit board could lead to a fire, increasing the risk of personal injury. A fire could occur even while the vehicle is not in use. As a precaution, owners are advised to park outside until the remedy has been made.
Fix: Parts for this recall are expected to available in March 2013. GM will notify Buick, Chevrolet, and GMC owners when parts are available. Buick owners may contact the owner center at 1-800-521-7300, Chevrolet owners at 1-866-694-6546, and GMC owners at 1-866-996-9463. Isuzu owners will be notified by Isuzu Motors when parts are available. Owners may contact Isuzu customer service at 1-800-255-6727. SAAB owners will be notified by SAAB Cars North America when parts are available and for inquiries, owners may call SAAB customer service at 1-800-955-9007.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
The contact owns a 2007 Chevrolet Trailblazer. The contact stated that the driver's side power master window switch had failed and failed to roll up the windows. There was no warning light illuminated. The contact stated that the failure had caused a significant amount of water to leak into the…
Keeps blowing #46 headlight relay. Happens every 2-3 weeks. When this happens the low beams stop working. I have to switch to high beams to continue driving.
I've had the brakes replaced because I thought they were an issue I was having with my ABS. But my car will randomly lock its brakes as I'm driving, no matter what speed. I'm scared to drive it. It also almost loses all power after breaking but then speeds up on its own making it almost impossible…
Frequently asked questions
Do all 2007 Chevrolet Trailblazers have electrical system problems?
No. NHTSA has 200 owner complaints about electrical system for the 2007 Chevrolet Trailblazer (27% of the 732 complaints for this model year). Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the 2007 Chevrolet Trailblazer electrical system?
Yes: 2 safety recalls list electrical system. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
At what mileage do electrical system problems start?
The median reported mileage is 77,000 miles: half of the reports with a mileage came before that.
What do owners say about electrical system problems on the 2007 Chevrolet Trailblazer?
The most frequent phrase is “fuel gauge”, in 25 of 200 complaints, followed by “window switch” (19).
Other 2007 Chevrolet Trailblazer problems
See all 2007 Chevrolet Trailblazer problems or electrical system problems across all Trailblazer years.