If using LS2edit these are the model and years we can custom tune:

2005 cars

Chevy Corvette 6.0L V8 LS2
Pontiac Grand Prix 5.3L V8 LS4
Pontiac GTO 6.0L V8 LS2

2006 cars

Chevy Corvette 6.0L V8 LS2 and 7.0L V8 LS7
Chevy Cobalt 2.4L I4 LE5
Chevy Malibu 3.5L V6 LZ4 3.9L V6 LZ9
Pontiac G5 2.4L I4 LE5
Saturn ION 2.4L I4 LE5
Pontiac G62.4L I4 LE5 3.5L V6 LZ4 3.9L V6 LZ9
Pontiac Solstice 2.4L I4 LE5
Chevy Impala 3.5L V6 LZ4 3.5L V6 LZE 3.9L V6 LZ8 5.3L V8 LS4
Chevy Monte Carlo 3.5L V6 LZ4 3.5L V6 LZE 5.3L V8 LS4
Saturn Aura3.5L V6 LZ4
Cadillac CTS-V6.0L V8 LS2
Cadillac STS 4.4L V8 LC3
Cadillac XLR 4.4L V8 LC3
Cadillac DTS 4.6L V8 L37 4.6L V8 LD8
Buick Lucerne 4.6L V8 LD8
Pontiac Grand Prix5.3L V8 LS4
Pontiac GTO 6.0L V8 LS2

2007 Cars

Chevy Corvette 6.0L V8 LS2 7.0L V8 LS7
Chevy Cobalt 2.2L I4L61 2.4L I4 LE5
Chevy Malibu 2.2L I4 L61 3.5L V6 LZ4 3.9L V6 LZ9
Pontiac G5 2.2L I4 L61 2.4L I4 LE5
Saturn ION 2.2L I4 L61 2.4L I4 LE5
Pontiac G6 2.4L I4 LE5 3.5L V6 LZ4 3.6L V6 LY7 3.9L V6 LZ9
Pontiac Solstice 2.4L I4 LE5
Saturn Sky 2.4L I4 LE5
Chevy Impala 3.5L V6 LZ4 3.5L V6 LZE 3.9L V6 LZ8 5.3L V8 LS4
Chevy Monte Carlo 3.5L V6 LZ4 3.5L V6 LZE 5.3L V8 LS4
Saturn Aura 3.5L V6 LZ4 3.6L V6 LY7
Buick LaCrosse/Allure 3.6L V6 LY7
Cadillac CTS 3.6L V6 LY7 6.0L V8 LS2
Cadillac STS 3.6L V6LY7 4.4L V8 LC3 4.6L V8 LH2
Cadillac XLR 4.4L V8 LC3 4.6L V8 LH2
Cadillac DTS 4.6L V8 L37 4.6L V8 LD8
Buick Lucerne 4.6L V8 LD8
Pontiac Grand Prix 5.3L V8 LS4

2008-2010 Cars

Chevy Corvette 7.0L V8 LS7 6.2L V8 LS3, LS9 (ZR1)
Chevy Camaro Base and SS models
Chevy Cobalt 2.2L I4 L61 2.4L I4 LE5
Chevy Malibu 2.2L I4 L61 3.5L V6 LZ4 2.4L I4 LE5 3.6L V6 LY7
Pontiac G5 2.2L I4 L61 2.4L I4 LE5
Pontiac G6 2.4L I4 LE5 3.5L V6 LZ4 3.6L V6 LY7 3.9L V6 LZ9
Pontiac Solstice 2.4L I4 LE5
Saturn Sky 2.4L I4 LE5
Chevy Impala 3.5L V6 LZ4 3.5L V6 LZE 5.3L V8 LS4 3.9L V6 LZG
Saturn Aura 3.5L V6 LZ4 3.6L V6 LY7 2.4L I4 LE5
Buick LaCrosse/Allure 3.6L V6 LY7 5.3L V8 LS4
Cadillac CTS 3.6L V6 LY7 3.6L V6 LLT
Cadillac STS 4.4L V8 LC3 4.6L V8 LH2 3.6L V6 LLT
Cadillac XLR 4.4L V8 LC3 4.6L V8 LH2
Cadillac DTS 4.6L V8 L37 4.6L V8 LD8
Buick Lucerne 4.6L V8 LD8 4.6L V8 L37
Pontiac Grand Prix 5.3L V8 LS4
Pontiac G8 3.6L V6 LY7

2005 Trucks

Buick Rainier 5.3L V8 LH6
Chevy Trailblazer 5.3L V8 LH6
GMC Envoy 5.3L V8 LH6
Saab 9-7X 5.3L V8 LH6
GMC Sierra5.3L V8 LH6

2006 Trucks

Chevy HHR 2.4L I4 LE5
Buick Rainier 5.3L V8 LH6
Chevy Trailblazer 5.3L V8L H6 6.0L V8 LS2
GMC Envoy 5.3L V8 LH6
Saab 9-7X 5.3L V8 LH6

2007 Trucks

Chevy HHR 2.2L I4 L61 2.4L I4 LE5
Saturn VUE 2.2L I4 L61
Cadillac SRX 3.6L V6 LY7 4.6L V8 LH2
Saturn Outlook 3.6L V6 LY7
GMC Acadia 3.6L V6 LY7
Chevy Equinox 3.4L V6 LNJ
Pontiac Torrent 3.4L V6 LNJ
Buick Terraza 3.9L V6 LGD 3.9L V6 LZ9
Chevy Uplander 3.9L V6 LGD 3.9L V6 LZ9
Pontiac Montana 3.9L V6 LGD 3.9L V6 LZ9
Saturn Relay 3.9L V6 LZ9
Chevy Avalanche 5.3L V8 LC9 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76
Cadillac Escalade 6.2L V8 L92
GMC Tahoe 4.8L V8 LY2 5.3L V8 LMG 5.3L V8 LY5
GMC Yukon 4.8L V8 LY2 5.3L V8 LC9 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6 6.2L V8 L92
Chevy Suburban 5.3L V8 LC9 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6
Buick Rainier 5.3L V8 LH6
Chevy Trailblazer 5.3L V8 LH6 6.0L V8 LS2
GMC Envoy 5.3L V8 LH6
Saab 9-7X 5.3L V8 LH6
Chevy Silverado 4.8L V8 LY2 5.3L V8 LC9 5.3L V8 LH6 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6
GMC Sierra4 .8L V8 LY2 5.3L V8 LC9 5.3L V8 LH6 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6 6.2L V8 L92

2008 Trucks

Chevy HHR 2.0L Turbo LNF 2.2L I4 L61 2.4L I4 LE5
Saturn VUE 2.4L I4 LE5 3.5L V6 LZ4 3.6L V6 LY7
Buick Enclave3.6L V6 LY7
Chevy Colorado 2.9L I4 LLV 3.7L I5 LLR
GMC Canyon 2.9L I4 LLV 3.7L I5 LLR
Hummer H3 3.7L I5 LLR 5.3L V8 LH8
Cadillac SRX 3.6L V6 LY7 4.6L V8 LH2
Saturn Outlook 3.6L V6 LY7
GMC Acadia 3.6L V6 LY7
Chevy Equinox 3.6L V6 LY7 3.4L V6 LNJ
Pontiac Torrent GXP 3.6L V6 LY7
Pontiac Torrent 3.4L V6 LNJ
Chevy Uplander 3.9L V6 LGD 3.9L V6 LZ9
Pontiac Montana 3.9L V6 LGD 3.9L V6 LZ9
Chevy Avalanche 5.3L V8 LC9 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76
Cadillac Escalade 6.2L V8 L92
GMC Tahoe 4.8L V8 LY2 5.3L V8 LMG 5.3L V8 LY5
GMC Yukon 4.8L V8 LY2 5.3L V8 LC9 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6 6.2L V8 L92
Chevy Suburban 5.3L V8 LC9 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6
Chevy Trailblazer 5.3L V8 LH6 6.0L V8 LS2 4.2L I6 LL8
GMC Envoy 5.3L V8 LH6 4.2L I6 LL8
Saab 9-7X 5.3L V8 LH6 4.2L I6 LL8 6.0L V8 LS2
Chevy Silverado 4.3L V6 LU3 4.8L V8 LY2 5.3L V8 LC9 5.3L V8 LH6 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6
GMC Sierra 4.3L V6 LU3 4.8L V8 LY2 5.3L V8 LC9 5.3L V8 LH6 5.3L V8 LMG 5.3L V8 LY5 6.0L V8 L76 6.0L V8 LY6 6.2L V8 L92
Chevy Express 4.3L V6 LU3 4.8L V8 LY2 5.3L V8 LMF 6.0L V8 LY6
GMC Savana 4.3L V6 LU3 4.8L V8 LY2 5.3L V8 LMF 6.0L V8 LY6
W3500/W4500 6.0L V8 LY6
Hummer H2 6.2L V8 L92