Engines and modifications Silverado 1500 IV Regular Cab Long Box

5.3 EcoTec3 V8 (355 Hp) Automatic

5.3 EcoTec3 V8 (355 Hp) 4WD Automatic

4.3 EcoTec3 V6 (285 Hp) Automatic

4.3 EcoTec3 V6 (285 Hp) 4WD Automatic