Common Problems With GM's 8 Speed Transmission (According To Owners)
Common Problems With GM’s 8 Speed Transmission (According To Owners) The General Motors 8L family of transmissions has been in service since 2014, gradually replacing older 6L six-speed units across much of the company’s lineup. The bigger 8L90 was the first GM 8-speed transmission, and it debuted in the 2015 Chevrolet Corvette C7 Stingray, while the smaller 8L45 debuted in the 2016 Cadillac CT6. Not long after, the 8L family of transmissions expanded its reach to many other GM products....