2004 Chevrolet Trailblazer Ext vs 2006 Chevrolet Trailblazer Ext
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2004 Chevrolet Trailblazer Ext | 2006 Chevrolet Trailblazer Ext |
|---|---|---|
| NHTSA complaints | 261 | 189 |
| Recall campaigns | 1 | 6 |
| Service bulletins (TSBs) | 126 | 169 |
| Investigations | 3 | 4 |
| Crash reports | 6 | 2 |
| Fire reports | 3 | 2 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 15–16 | 15–16 |
| Median reported incident mileage | 64,000 mi | 58,000 mi |
Reported problems side by side
| Component | Chevrolet Trailblazer Ext | Chevrolet Trailblazer Ext |
|---|---|---|
| Electrical System | 145 | 41 |
| Fuel System, Gasoline | 29 | 102 |
| Fuel System, Other | 8 | 23 |
| Exterior Lighting | 13 | 11 |
| Power Train | 17 | 6 |
| Engine and Engine Cooling | 16 | 4 |
| Structure | 7 | 9 |
| Visibility | 7 | 8 |
Symptoms owners describe
| Stalling | 13 | 18 |
| Check engine light | 9 | 18 |
| Rust / corrosion | 6 | 0 |
2004 Chevrolet Trailblazer Ext
2006 Chevrolet Trailblazer Ext
Compare all Chevrolet Trailblazer Ext vs Chevrolet Trailblazer Ext years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.