Regular Cab, Long Box
Extended Cab, Long Box
Crew Cab, Standard Box
Crew Cab, Long Box
Regular Cab, Long Box, Dual Rear Wheel
Crew Cab, Long Box, Dual Rear Wheel
Extended Cab, Long Box, Dual Rear Wheel
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| Powertrain | Duramax® 6.6L Turbo-Diesel V8 engine 2WD | Vortec® 6.0L Variable Valve Timing V8 SFI engine 4WD | Duramax® 6.6L Turbo-Diesel V8 engine 4WD |
| Fuel Type | Turbocharged Diesel V8 | Gas/Ethanol V8 | Turbocharged Diesel V8 |
| Displacement (liters/cu. in.) | 6.6L/403 | 6.0L/366 | 6.6L/403 |
| 6-speed automatic heavy-duty transmission | N/A | Standard | N/A |
| Allison 1000 6-speed automatic transmission | Standard | N/A | Standard |
| Horsepower @ RPM | 397 @ 3000 | 322 @ 4400 | 397 @ 3000 |
| Torque @ RPM | 765 @ 1600 | 380 @ 4200 | 765 @ 1600 |
| Fuel Injection | Direct Injection | Electronic Fuel Injection | Direct Injection |
| Axle Ratio | 3.73 | 3.73 | 3.73 |
| Battery Cold Cranking Amps | 730 | 600 | 730 |
| Alternator (Amps) | 125 | 125 | 125 |
| Fuel Economy | Duramax® 6.6L Turbo-Diesel V8 engine 2WD | Vortec® 6.0L Variable Valve Timing V8 SFI engine 4WD | Duramax® 6.6L Turbo-Diesel V8 engine 4WD |
| City (MPG) | N/A | N/A | N/A |
| Highway (MPG) | N/A | N/A | N/A |
| Fuel Tank Capacity (gal.) | 36.0 gal | 36.0 gal | 36.0 gal |
| Steering/Suspension | Duramax® 6.6L Turbo-Diesel V8 engine 2WD | Vortec® 6.0L Variable Valve Timing V8 SFI engine 4WD | Duramax® 6.6L Turbo-Diesel V8 engine 4WD |
| Front Suspension | Independent | Independent | Independent |
| Rear Suspension | Multi-Leaf | Multi-Leaf | Multi-Leaf |
| StabiliTrak Electronic Stability Control System | N/A | N/A | N/A |
| Traction Control System | N/A | N/A | N/A |
| Turning Circle (ft.) | 45.6 ft | 45.6 ft | 45.6 ft |
| Brakes | Duramax® 6.6L Turbo-Diesel V8 engine 2WD | Vortec® 6.0L Variable Valve Timing V8 SFI engine 4WD | Duramax® 6.6L Turbo-Diesel V8 engine 4WD |
| 4-Wheel Disc Brakes | Yes | Yes | Yes |
| 4-Wheel ABS | Yes | Yes | Yes |