Engines and modifications Silverado 2500 HD III (K2XX) Crew Cab Standard Box

6.6 TD V8 (445 Hp) Automatic

6.6 TD V8 (445 Hp) 4WD Automatic

6.6 Duramax TD V8 (397 Hp) Automatic

6.6 Duramax TD V8 (397 Hp) 4WD Automatic

6.0 V8 (360 Hp) Automatic

6.0 V8 (360 Hp) 4WD Automatic

6.0 V8 (301 Hp) Automatic CNG