Engines and modifications Silverado 3500 HD IV (T1XX, facelift 2024) Crew Cab Long Bed

6.6 V8 (401 Hp) SRW Automatic

6.6 V8 (401 Hp) DRW Automatic

6.6 V8 (401 Hp) 4WD SRW Automatic

6.6 V8 (401 Hp) 4WD DRW Automatic

6.6 Duramax TD V8 (470 Hp) SRW Automatic

6.6 Duramax TD V8 (470 Hp) DRW Automatic

6.6 Duramax TD V8 (470 Hp) 4WD SRW Automatic

6.6 Duramax TD V8 (470 Hp) 4WD DRW Automatic