Chevrolet Trailblazer electrical system problems by year
2,342 NHTSA owner complaints name the electrical system across 15 Trailblazer model years. The most reported year is 2004 with 627 reports.
| Year | Electrical System reports | Share | Median mileage | |
|---|---|---|---|---|
| 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% | 79,500 mi | |
| 2007 Trailblazer | 200 | 27% | 77,396 mi | |
| 2006 Trailblazer | 251 | 23% | 89,940 mi | |
| 2005 Trailblazer | 617 | 42% | 70,000 mi | |
| 2004 Trailblazer | 627 | 58% | 66,000 mi | |
| 2003 Trailblazer | 285 | 32% | 80,000 mi | |
| 2002 Trailblazer | 181 | 16% | 72,000 mi | |
| 2001 Trailblazer | 2 | 10% | — | |
| 2000 Trailblazer | 1 | 4% | — |
Share is the fraction of that year’s complaints naming the electrical system. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.