SIERRA 2500HD DENALI POWERTRAIN & CHASSIS
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| Vortec 6.0L VVT V8 2WD | Vortec 6.0L VVT V8 4WD | Duramax 6.6L Turbo Diesel V8 2WD | Duramax 6.6L Turbo Diesel V8 4WD | |
| Powertrain | ||||
| Horsepower @ RPM | 360 @ 5400 | 360 @ 5400 | 397 @ 3000 | 397 @ 3000 |
| Torque @ RPM | 380 @ 4200 | 380 @ 4200 | 765 @ 1600 | 765 @ 1600 |
| Fuel Type | Gas | Gas | Diesel | Diesel |
| 6-speed Automatic Transmission | Standard | Standard | Standard | Standard |
| Transfer Case, automatic | Standard | Standard | Standard | Standard |
| 3.73 Rear axle ratio | Standard | Standard | Standard | Standard |
| 4.10 Rear axle ratio | Available | Available | N/A | N/A |
| Differential, Locking rear | Standard | Standard | Standard | Standard |
| 4-wheel antilock 4-wheel disc | Standard | Standard | Standard | Standard |
| Fuel Economy | ||||
| City (MPG) | Not Rated | Not Rated | Not Rated | Not Rated |
| Highway (MPG) | Not Rated | Not Rated | Not Rated | Not Rated |
| Fuel Tank Capacity (gal.) | 36 | 36 | 36 | 36 |
| Steering & Suspension | ||||
| StabiliTrak | Standard | Standard | Standard | Standard |
| Front Suspension | Ind. Long-/Short-Arm Torsion Bar | Ind. Long-/Short-Arm Torsion Bar | Ind. Long-/Short-Arm Torsion Bar | Ind. Long-/Short-Arm Torsion Bar |
| Rear Suspension | Two-Stage Multi-Leaf Spring | Two-Stage Multi-Leaf Spring | Two-Stage Multi-Leaf Spring | Two-Stage Multi-Leaf Spring |
| Z82 HD Trailering Equipment | Standard | Standard | Standard | Standard |
| Z85 HD Suspension Package | Standard | Standard | Standard | Standard |
| Z71 Suspension Package | Available | Available | Available | Available |
| Turning Diameter (ft.) | 50.5 | 50.5 | 50.5 | 50.5 |