 
			| 2004 GMC Sierra 2500HD Specifications | |
|---|---|
| 2004 GMC Sierra 2500HD Sub Models | |
| SLE Crew Cab | 2.2% | 
| SLE Crew Cab 4x4 | 25.0% | 
| SLE Extended Cab | 3.3% | 
| SLE Extended Cab 4x4 | 28.3% | 
| SLE Regular Cab 4x4 | 3.3% | 
| SLT Crew Cab | 2.2% | 
| SLT Crew Cab 4x4 | 22.8% | 
| SLT Extended Cab 4x4 | 6.5% | 
| Work Truck Crew Cab 4x4 | 1.1% | 
| Work Truck Extended Cab | 2.2% | 
| Work Truck Extended Cab Utility | 1.1% | 
| Work Truck Regular Cab | 1.1% | 
| Work Truck Regular Cab 4x4 | 1.1% | 
| 2004 GMC Sierra 2500HD Engines | |
| 6.0 Liter OHV 16-Valve V8 | 63.0% | 
| 6.6 Liter OHV 16-Valve Duramax Turbo-Diesel V8 | 33.7% | 
| 8.1 Liter OHV 16-Valve V8 | 3.3% | 
| 2004 GMC Sierra 2500HD Transmissions | |
| 4 Speed Automatic | 66.3% | 
| 5 Speed Automatic | 32.6% | 
| 6 Speed Manual | 1.1% | 
| 2004 GMC Sierra 2500HD Colors | |
| Carbon Metallic | 6.5% | 
| Fire Red | 10.9% | 
| Marine Blue Metallic | 3.3% | 
| Onyx Black | 10.9% | 
| Polo Green Metallic | 4.3% | 
| Sand Beige Metallic | 6.5% | 
| Silver Birch Metallic | 22.8% | 
| Sport Red Metallic | 5.4% | 
| Summit White | 29.3% | 
| 2004 GMC Sierra 2500HD Interiors | |
| Dark Pewter | 64.1% | 
| Neutral | 22.8% | 
| Pewter | 13.0% |