Chevrolet Trailblazer Ext engine and engine cooling problems by year
50 NHTSA owner complaints name the engine and engine cooling across 4 Trailblazer Ext model years. The most reported year is 2004 with 16 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2006 Trailblazer Ext | 4 | 2% | — | |
| 2004 Trailblazer Ext | 16 | 6% | 63,890 mi | |
| 2003 Trailblazer Ext | 16 | 5% | 69,060 mi | |
| 2002 Trailblazer Ext | 14 | 14% | 52,499 mi |
Share is the fraction of that year’s complaints naming the engine and engine cooling. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.