| Engines | EPA Estimated Fuel Economy (city/hwy) |
Fuel Tank Capacity (gallons) |
|
|---|---|---|---|
| 2WD Models | Vortec 5.3L V8 SFI with Active Fuel Management | Gasoline: 15/21 E85: 11/16 |
31 |
| 2WD Models | Vortec 6.2L VVT V8 SFI | Gasoline: 12/19 E85: 9/14 |
31 |
| 4WD Models | Vortec 6.2L VVT V8 SFI | ![]() |
31 |
| 2WD Models, 3/4 ton models only | Vortec 6.0L VVT V8 SFI | ![]() |
39 |
| 4WD Models, 3/4 ton models only | Vortec 6.0L VVT V8 SFI | ![]() |
39 |