| 2003 | Chevrolet | Silverado 2500 | Base Standard Cab Pickup 2-Door | 5.3L 5328CC 325Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | WT Extended Cab Pickup 4-Door | 4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | LT Extended Cab Pickup 4-Door | 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 2500 HD | WT Standard Cab Pickup 2-Door | 6.0L 5967CC 364Cu. In. V8 CNG OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | Base Extended Cab Pickup 4-Door | 5.3L 5328CC 325Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | LS Extended Cab Pickup 4-Door | 4.3L 262Cu. In. V6 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 HD | LS Crew Cab Pickup 4-Door | 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 2500 HD | Base Standard Cab Pickup 2-Door | 6.6L 6599CC 403Cu. In. V8 DIESEL OHV Turbocharged | |
| 2003 | Chevrolet | Silverado 2500 | LT Extended Cab Pickup 4-Door | 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 2500 HD | LS Standard Cab Pickup 2-Door | 8.1L 496Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | LS Extended Cab Pickup 4-Door | 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | WT Standard Cab Pickup 2-Door | 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 2500 | Base Standard Cab Pickup 2-Door | 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | Base Extended Cab Pickup 4-Door | 4.3L 262Cu. In. V6 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | WT Standard Cab Pickup 2-Door | 4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | SS Extended Cab Pickup 4-Door | 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | LT Extended Cab Pickup 4-Door | 4.8L 294Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 HD | LT Crew Cab Pickup 4-Door | 6.0L 5967CC 364Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 2500 HD | Base Extended Cab Pickup 4-Door | 8.1L 496Cu. In. V8 GAS OHV Naturally Aspirated | |
| 2003 | Chevrolet | Silverado 1500 | WT Extended Cab Pickup 4-Door | 5.3L 5328CC 325Cu. In. V8 FLEX OHV Naturally Aspirated | |
