GM 4T80 transmission
The 4T80E is a series of automatic transmissions from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the 1980 model year "X" body.
| 4T80-E | |
|---|---|
A Hydra-Matic 4T80 transmission at the Ypsilanti Automotive Heritage Museum | |
| Overview | |
| Manufacturer | General Motors |
| Production | 1993–2011 |
| Body and chassis | |
| Class | 4-speed transverse automatic transmission |
| Chronology | |
| Predecessor | Turbo-Hydramatic 125 |
| Successor | 6T70 |
The 4T80-E transmission is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch. The 4T80 originally used a viscous clutch, but this was changed in 2005 to ECCC.
The 4T80 is built at Willow Run Transmission in Ypsilanti, Michigan.
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