| Year: | 2003 | |
| Make: | GMC | |
| Model: | Sierra 2500HD | |
| Engine: | 6.6 Liter OHV 32-Valve Duramax Turbo-Diesel V8 | |
| Transmission: | 5 Speed Allison Automatic | |
| There are 3 possible sub models: | SLT Crew Cab 4x4 Crew Cab 4x4 SLE Crew Cab 4x4 |
76% 12% 12% |
| Year: | 2003 |
| Make: | GMC |
| Model: | Sierra 2500HD |
| Sub Model: | SLT Crew Cab 4x4 |
| Engine: | 6.6 Liter OHV 32-Valve Duramax Turbo-Diesel V8 |
| Transmission: | 5 Speed Allison Automatic |
| Year: | 2003 |
| Make: | GMC |
| Model: | Sierra 2500HD |
| Sub Model: | Crew Cab 4x4 |
| Engine: | 6.6 Liter OHV 32-Valve Duramax Turbo-Diesel V8 |
| Transmission: | 5 Speed Allison Automatic |
| Year: | 2003 |
| Make: | GMC |
| Model: | Sierra 2500HD |
| Sub Model: | SLE Crew Cab 4x4 |
| Engine: | 6.6 Liter OHV 32-Valve Duramax Turbo-Diesel V8 |
| Transmission: | 5 Speed Allison Automatic |