Engines and modifications Silverado 3500 HD III (K2XX) Double Cab Long Box

6.6 Duramax TD V8 (445 Hp) SRW Automatic

6.6 Duramax TD V8 (445 Hp) DRW Automatic

6.6 Duramax TD V8 (445 Hp) 4WD SRW Automatic

6.6 Duramax TD V8 (445 Hp) 4WD DRW Automatic

6.6 Duramax TD V8 (397 Hp) SRW Automatic

6.6 Duramax TD V8 (397 Hp) DRW Automatic

6.6 Duramax TD V8 (397 Hp) 4WD SRW Automatic

6.0 V8 (360 Hp) SRW Automatic

6.0 V8 (360 Hp) 4WD SRW Automatic

6.0 V8 (360 Hp) 4WD DRW Automatic

6.0 V8 (301 Hp) Automatic CNG