electronic Hydra-Matics based on the Turbo-Hydramatic design. Most early electronic transmissions use the "-E" designator to differentiate them from their non-electronic cousins, but this has been dropped on transmissions with no mechanical version like the new GM 6L80 transmission. Today, GM uses a simple naming scheme for their transmissions, with the "Hydra-Matic" name used on most automatics across all divisions. First-generation longitudinal (Rear Wheel drive) 1991–2001 4L30-E — 4-speed light-duty (used in BMW, Cadillac, Isuzu, and Opel cars) 1992– 4L60-E/4L65-E — 4-speed medium-duty (used in GM trucks and rear-wheel-drive cars) 1991– 4L80-E/4L85-E — 4-speed heavy-duty (used in GM trucks) First-generation transverse (Front Wheel drive) 1995–2010 4T40-E/4T45-E — 4-speed light-duty (used in smaller front wheel drive GM vehicles) 1991–2010 4T60-E/4T65-E/4T65E-HD — 4-speed medium-duty (used in larger front wheel drive GM vehicles) 1993–2010 4T80-E — 4-speed heavy-duty (used in large front wheel drive GM vehicles, only with Cadillac NorthStar V8 and Related Oldsmobile V8) Second-generation longitudinal (Rear Wheel drive) 2000–2007 5L40-E/5L50 — 5-speed medium-duty (used in Cadillac's Sigma vehicles) 2007–present 6L45/6L50 — 6-speed medium-duty (used in GM Sigma platform cars) 2006–present: 6L80/6L90 — 6-speed heavy-duty (used in GM trucks and performance cars) 2014–present: 8L90 — 8-speed heavy-duty (used in GM trucks and performance cars) 2016–present: 8L45 — 8-speed light-duty (used in GM luxury cars) 2017–present: 10L80* - Ford-GM 10-speed automatic transmission (used in GM light trucks including pickups and related SUVs) 2017–present: 10L90* - Ford-GM 10-speed automatic transmission (used in GM performance cars) *This transmission is part of a joint-venture between General Motors and Ford Motor Company to split development of two transmissions, a longitudinal 10-speed and transverse 9-speed. Ford led the design of the 10-speed transmission, as well as filing the design patents for said transmission. According to an official report by the SAE (Society of Automotive Engineers) the design of the 10-speed gearbox is essentially all Ford, while GM was responsible for designing the 9-speed 9T transverse automatic gearbox. As part of their joint-venture, Ford will let GM use the 10-speed transmission with rights to modify and manufacture it for their own applications. In-exchange for Ford's 10-speed transmission, General Motors will let Ford use its 9-speed transmission for front-wheel drive applications; Ford ultimately declined use of the 9T and instead, removed 1 gear and used the 9T as an 8-speed transmission. Second-generation transverse (Front Wheel drive) 2008–present: 6T30/6T40/6T45 — 6-speed light-duty 2006–present: 6T70/6T75 — 6-speed medium-duty 2016–present: 9T50/9T65 Hydra-Matic –