2004 GMC Sierra vs 2006 GMC Sierra
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 GMC Sierra | 2006 GMC Sierra |
|---|---|---|
| NHTSA complaints | 188 | 53 |
| Recall campaigns | 7 | 4 |
| Service bulletins (TSBs) | 563 | 220 |
| Investigations | 0 | 0 |
| Crash reports | 11 | 3 |
| Fire reports | 5 | 3 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | — | — |
| Median reported incident mileage | 50,000 mi | 43,500 mi |
Reported problems side by side
| Component | GMC Sierra | GMC Sierra |
|---|---|---|
| Service Brakes | 44 | 20 |
| Electrical System | 39 | 7 |
| Service Brakes, Hydraulic | 28 | 7 |
| Power Train | 18 | 2 |
| Steering | 14 | 4 |
| Structure | 9 | 1 |
| Visibility | 7 | 2 |
| Suspension | 3 | 6 |
Symptoms owners describe
| Rust / corrosion | 43 | 14 |
| Brake problems | 17 | 0 |
| Stalling | 8 | 0 |
| Clunking / rattling | 7 | 0 |
2004 GMC Sierra
2006 GMC Sierra
Compare all GMC Sierra vs GMC Sierra 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.