Lemans FWD L4-121 2.0L (1989)
Torque Converter Clutch: All Technical Service Bulletins
A/T - Intermittent/No Torque Converter Clutch Apply
Bulletin Number:
89-7-18
Reference Number:
877157R
Publish Date:
1/89
Subject:
INTERMITTENT AND/OR NO TORQUE CONVERTER CLUTCH APPLY 1989 125C/HYDRA-MATIC 3T40, (SOLENOID P/N)
Models
Affected:
1989 6000, SUNBIRD, GRAND AM AND LEMANS
FIGURE 1
Intermittent Torque Converter Clutch Apply and/or No Torque Converter Clutch Apply due to Solenoid Assemblies (333) that may be inoperative.
DATE OF PRODUCTION CHANGE:
(Figure 1)
Suspect solenoids will have the following production dates stamped on the solenoid body: 258, 268, 278, 288.
Solenoid assemblies produced before and after these dates are not affected.
SERVICE ACTION:
Refer to Section 6E3-C8 Torque Converter Clutch (TCC) System and Section 7 Transaxle Diagnosis Section of your service manual to verify if the
solenoid assembly is functioning properly.
Do not attempt to repair suspect solenoid assemblies.
If an inoperative solenoid assembly is found in any THM 125C/HYDRAMATIC 3T40 replace it with a new one.
SERVICE INFORMATION:
Refer to the following part number when replacement of the solenoid assembly is necessary.
Part No.
Description
8652379
Assembly, Solenoid and Conduit
Parts are currently available from GMSPO.
SERVICE MANUAL REFERENCE:
Whenever servicing a solenoid assembly on any THM 125C/HYDRA-MATIC 3T40 refer to the Unit Repair Section of your service manual.
