General Description

Transmission ID:

Transmission Identification Label: 3T40

Hydra-Matic 3T40 Transaxle:

3T40 Transmission Cutaway View


The 3T40 transmission is used in this vehicle. There are no manual transmission options on this vehicle.


Hydra-Matic 3T40 (MD9) Automatic Transmission:



The Hydra-Matic 3T40 transmission is a fully automatic transmission used in front wheel drive and mid-engine rear wheel drive vehicles, which provides three forward gear ranges and a reverse.

Shift points are controlled by throttle opening via a throttle cable and a governor circuit.

A Torque converter clutch (TCC) is controlled by a solenoid located inside the transmission assembly. The solenoid is energized by the Electronic Control Module (ECM) through a combination of switches and sensors.

Two oil pressure switches are located inside the transaxle which relay actual gear position to the Engine Control Module (ECM) for use in fuel control and other engine management functions.