Chevrolet Trailblazer engine problems by year
247 NHTSA owner complaints name the engine across 13 Trailblazer model years. The most reported year is 2006 with 43 reports.
| Year | Engine reports | Share | Median mileage | |
|---|---|---|---|---|
| 2025 Trailblazer | 3 | 14% | — | |
| 2024 Trailblazer | 9 | 27% | — | |
| 2023 Trailblazer | 15 | 22% | — | |
| 2022 Trailblazer | 16 | 15% | — | |
| 2021 Trailblazer | 38 | 20% | — | |
| 2009 Trailblazer | 2 | 7% | — | |
| 2008 Trailblazer | 21 | 11% | 93,000 mi | |
| 2007 Trailblazer | 22 | 3% | 90,000 mi | |
| 2006 Trailblazer | 43 | 4% | 120,500 mi | |
| 2005 Trailblazer | 30 | 2% | 102,100 mi | |
| 2004 Trailblazer | 16 | 1% | 108,000 mi | |
| 2003 Trailblazer | 15 | 2% | 150,891 mi | |
| 2002 Trailblazer | 17 | 1% | 143,500 mi |
Share is the fraction of that year’s complaints naming the engine. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.