GM 4T40 transmission
| 4T40-E/4T45-E | |
|---|---|
| Overview | |
| Manufacturer | General Motors |
| Production | 1995–2010 |
| Body and chassis | |
| Class | 4-speed transverse automatic transmission |
| Chronology | |
| Predecessor | Turbo-Hydramatic 125 |
| Successor | GM 6T40 transmission |
The 4T40-E and 4T45-E are a series of automatic transaxles from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family replaced the Turbo-Hydramatic 125 transverse three speed automatic introduced in 1980.
The "-E" series is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch. Since non-electronic versions of these transmissions do not exist, it is conventional to refer to these models as simply 4T40 and 4T45, leaving out the "-E".
The 4T40 and 4T45 were assembled at Windsor Transmission in Windsor, Ontario, Canada.