GM 4L80-E transmission

The 4L80-E (and similar 4L85-E) is a series of automatic transmissions from General Motors.

Designed for longitudinal engine configurations, the series included 4 forward gears.

The 4L80 and 4L85 were built at Willow Run Transmission in Ypsilanti, Michigan.

[2] The 4L80-E is rated to a maximum GVWR of 18,000 lb, depending on the axle and vehicle.

By activating and deactivating the solenoids in a predetermined pattern by the PCM, four distinct gear ratios can be achieved.