Transmission Identification

4T60-E Transaxle ID And Unit Number Location:

4T60-E Transaxle ID Label

HYDRA-MATIC 4T60-E Automatic Transaxle.:

4T60-E Transaxle Section View

Transaxle ID (Service Parts Information Label):

Typical RPO Label



This vehicle comes equipped with the 4T60-E, electronically controlled 4-speed automatic transaxle W/lock-up torque converter ([1][2]Torque Converter Clutch - TCC.)



Automatic Transaxle:
RPO Code: M13 [1] 4T60-E Models


Transaxle Control System Computer Controlled Transaxle.





[1] Regular Production Option (RPO) is the Model code stamped on the transmission identification label and the RPO label. (Located on the rear trunk lid.)


The HYDRAMATIC 4T60-E transmission is electronically controlled by the ECM/PCM. Transmission shifts are carried out by electro-hydraulic solenoids as requested by the ECM/PCM. Inputs to the ECM/PCM determine the shift pattern and Torque Converter Clutch (TCC) operation.

Four solenoids in the transaxle respond to the ECM/PCM signals. Two solenoids, SHIFT A and SHIFT B, control shifts. The TCC APPLY and TCC Pulse Width Modulation (TCC MOD or PWM MOD) solenoids control the apply and release of the TCC.




The 4T60-E transmission has several variations of electronic control system types. Refer to transmission name plate for specific two letter model and third letter, transmission identification (W for 4T60-E) reference. The models can also be identified by refering to the Regular Production Option (RPO) label located on the compact spare tire well cover in the trunk.


4T60-E transaxles used with 3.1L engines: CMW, and CWW.

4T60-E transaxles used with 3.8L engines: BTW, BYW, CLW, CSW, CTW, CXW, CZW, PHW, WAW, YLW, YMW, YRW, and YZW.