2007 Chevrolet Trailblazer electrical system problems
200 owner complaints filed with NHTSA name the electrical system on the 2007 Chevrolet Trailblazer — 27% of all complaints for this model year.
What owners report
“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…”
filed Jul 24, 2023
“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.”
filed Jun 10, 2023
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8…
PIP4723J · Service Bulletin/Repair Instructions · issued Oct 25, 2024
Electrical System problems in other Trailblazer years
| Year | Reports | Share |
|---|---|---|
| 2025 Trailblazer | 11 | 58% |
| 2024 Trailblazer | 11 | 34% |
| 2023 Trailblazer | 14 | 23% |
| 2022 Trailblazer | 29 | 27% |
| 2021 Trailblazer | 39 | 21% |
| 2009 Trailblazer | 9 | 33% |
| 2008 Trailblazer | 65 | 34% |
| 2006 Trailblazer | 251 | 23% |
| 2005 Trailblazer | 617 | 42% |
| 2004 Trailblazer | 627 | 58% |
| 2003 Trailblazer | 285 | 32% |
| 2002 Trailblazer | 181 | 16% |
Other reported problem areas on the 2007 Chevrolet Trailblazer
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.