The 6L80 (and similar 6L90) is a six-speed automatic transmission built by General Motors at its Willow Run Transmission plant in Ypsilanti, MI. It was introduced in late 2005, and is very similar in design to the smaller 6L45/6L50, produced at GM Powertrain in Strasbourg, France. It features clutch to clutch shifting, eliminating the one-way clutches used on older transmission designs. In February 2006 GM announced that it would invest $500 million to expand the Toledo Transmission plant in Toledo, Ohio to produce the 6L80 in 2008. Torque rating 440 ft/lb (600 nm). 6L90 1220ft/lb (2000 nm). Specifications Technical data Applications 2006–2009 Cadillac XLR-V 2006-2013 Chevrolet Corvette 2006 Holden VE Commodore/2008-2009 Pontiac G8 2006-2013 Holden/Chevrolet WM Statesman/Caprice 2014-2017 Holden/Chevrolet WN Statesman/Caprice 2007-2014 Chevrolet Silverado 2500HD/3500 HD 6.0 (6L90) 2007-2014 GMC Sierra 2500HD/3500HD 6.0 (6L90) 2007-2013 GMC Sierra Denali 2009-2013 Chevrolet Silverado 1500 5.3 (ext. & crew cab), 6.2 2009-2013 GMC Sierra 1500 5.3 (ext. & crew cab), 6.2 2010-2013 Chevrolet Silverado 1500 5.3 (reg. cab) 2010-2013 GMC Sierra 1500 5.3 (reg. cab) 2006-2009 Cadillac STS-V 2007-2015 Cadillac Escalade 2007-2015 Cadillac Escalade ESV 2007-2013 Cadillac Escalade EXT 2010-present Chevrolet Express 2500-3500 (6L90-E) 2010-present GMC Savana 2500-3500 (6L90-E) 2007-2015 GMC Yukon Denali 2009-2020 Chevrolet Tahoe 2009-2020 GMC Yukon 2009-2020 Chevrolet Suburban 1500 2008-2013 Chevrolet Suburban 2500 (6L90) 2009-2020 GMC Yukon XL 2008-2009 Hummer H2 2009-2013 Cadillac CTS-V (6L90) 2014-2019 (K2XX) Chevrolet Silverado/GMC Sierra 1500 2010-2015 Chevrolet Camaro 2011-2017 Chevrolet Caprice PPV 2012-2015 Chevrolet Camaro ZL1 (6L90) 2011(September)-2013 Holden VE Commodore Series 2(MY 2012) 2014-2017 Holden VF Commodore / Chevrolet SS 2009-2013 Chevrolet Avalanche 2015-2019 Chevrolet Silverado 2500HD/3500 HD 6.0 (6L90) 2015-2019 GMC Sierra 2500HD/3500HD 6.0 (6L90) 2019-2021 (T1XX) Chevrolet Silverado/GMC Sierra 1500 2020-present Chevrolet Silverado 2500HD/3500 HD 6.6 L8T (6L90) 2020-present GMC Sierra 2500HD/3500HD 6.6 L8T (6L90) See also List of GM transmissions Cadillac PDF info on 6L80-E Transmission: http://www.cadillacfaq.com/stsfaq/tsb/data/tsb/05-07-30-023.pdf References 6L80