GM 6L80 transmission

6L80/6L90
A Hydra-Matic 6L80 transmission at the Ypsilanti Automotive Heritage Museum
Overview
Manufacturer	General Motors
Production	2005–
Body and chassis
Class	6-speed longitudinal automatic transmission
Chronology
Predecessor	4L60-E/4L65-E 4L80-E/4L85-E
Successor	8L90

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.

Gear ratios:

Applications:

Cadillac PDF info on 6L80-E Transmission: