Generation III "LS1" Small Block Chevy (1997-2008)

This Model is part of the Small Block Chevy V8 Family of Engines.

This page is intended to aid in the understanding of the entire Gen III Lineup of engines, and as a guide when attempting to find one in a junkyard. For more details about engines, see that engines specific page.

SBC Gen III PCMs

By Displacement

4.8L (293ci)

LR4 "Vortec 4800
Iron Block
1999-2007 - Vin V
'99-'07 Silverado 1500 '00-'06 Tahoe '03-'07 Express 2500/3500

5.3L (325ci)

LM7 "Vortec 5300"		L59 "Vortec 5300 (Flex Fuel)"		LM4 "Vortec 5300"		L33 "Vortec 5300 HO"
Iron Block		Iron Block		Aluminum Block		Aluminum Block
1999-2007 - Vin T		2002-2007 - Vin Z		2003-2005 - Vin P		2005-2007 - Vin B
99-'07 Silverado 1500 '99-'00 Silverado 2500 '00-'06 Suburban 1500 '00-'06 Tahoe '03-'07 Express 1500/2500 '02-'06 Avalanche 1500 '02-'05 Escalade 2WD		'02-'07 Silverado 1500 '02-'06 Suburban 1500 '02-'06 Tahoe '05-'06 Avalanche 1500		'03-'05 Trailblazer EXT '03-'04 SSR '04-'04 GMC Envoy XL/XUV '04-'04 Buick Rainier '03-'04 Isuzu Ascender		'05-'07 Silverado 1500 4WD

LM4 "Vortec 5300"

2003-2005 - Vin P

Aluminum Block

By Model Year

1997

Corvette