Chevrolet Silverado 1500 Engines by Year
The Chevrolet Silverado 1500 engine catalog lists seven engine rows across the catalog years. Read each engine code alongside its listed name and year range; the range shows when that engine appears in the catalog, not a horsepower or other performance rating.
The entries vary by engine and year. The 4300 Vortec is listed for 1999–2000, while L35, LM7, and LR4 have different catalog ranges beginning in 1999. Later entries include the L59 (Flex-Fuel) and LU3, and LQ9 is listed for 2003–2006. These ranges describe catalog coverage, so an engine’s availability can differ by model year.
The rows do not provide engine ratings or confirm which engine is installed in a particular truck. For a specific vehicle’s engine details or any figure not listed here, check the door jamb or the owner’s manual.
Which engines were offered across this model’s catalog history.
| Engine | Code | Years | Count |
|---|---|---|---|
| 4300 Vortec | 4300-vortec | 1999–2000 | 2 |
| L35 | l35 | 1999–2002 | 4 |
| LM7 | lm7 | 1999–2006 | 8 |
| LR4 | lr4 | 1999–2005 | 7 |
| L59 (Flex-Fuel) | l59-flex-fuel | 2002–2006 | 5 |
| LU3 | lu3 | 2002–2013 | 12 |
| LQ9 | lq9 | 2003–2006 | 4 |