General Description

Hydra-Matic 4T60 (ME9) Automatic Transmission:

Transmission ID:

Transmission Identification Label:

Turbo Hydra-Matic 4T60 Automatic Transaxle:

4T60 Transmission Cutaway View

The Hydra-Matic 4T60 transmission is a fully automatic transmission used in front wheel drive vehicles which provides four 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.

Three 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.

Major Components:
^ [1][2]Torque Converter Clutch Assembly.
^ Sprocket and drive link assembly.
^ 1-2 and reverse band assemblies.
^ Input, 3rd, 2nd, and 4th clutches - multiple disc assemblies.
^ Input sprag and 3rd roller clutch.
^ Compound planetary gear set.
^ Differential and final drive assembly.
^ 4th gear oil pressure switch.
^ 3rd gear oil pressure switch.
^ 2nd gear oil pressure switch (some models only).