2010 Hydra-Matic 4T80 Transaxle (MH1) 5/06/2009
Type: Four speed front-wheel-drive, electronically controlled, automatic overdrive transaxle with an electronically controlled torque converter clutch.
Engine range: 4.6L
Maximum engine torque: 305 lb-ft (413 Nm)
Maximum gearbox torque: 461 lb-ft (625 Nm)
Gear ratios: MH1
First: 2.96
Second: 1.63
Third: 1
Fourth: 0.68
Reverse: 2.13
Final Drive Ratio: 3.11, 3.71
Maximum shift speed:
1-2 6500 rpm
2-3 6500 rpm
3-4 6500 rpm
Maximum validated gross vehicle weight:
6800 lb (3084 kg) DTS
7485 lb (3395 kg) DTS Limo
8768 lb (3977 kg) DTS armored Limo
7-position quadrant: P, R, N, OD, 3, 2, 1
Case material: die cast aluminum
Shift pattern: solenoid control
Shift quality: force motor control
Torque converter clutch: pulse width modulated solenoid control
Converter size: 265mm (reference) (diameter of torque converter turbine)
Fluid type: DEXRON® VI
Transmission weight: wet: 133.9 kg (295 lb)
Fluid capacity ( approximate ): 6.6L (7 qt) bottom pan removal - dry: 13.2L (14 qt)
Pressure taps available: line pressure
Transfer design: two-axis design, link chain assembly
Assembly sites: Ypsilanti, Mich.
Applications:
Cadillac DTS
Buick Lucerne
