Park Avenue V6-231 3.8L VIN L SFI (1993)
Valve Body: All Technical Service Bulletins
TCC - Doesn't Apply/Slipping Condition
Bulletin: 93-74T60-5
Date: May '93
Ref.No.: 93-137-4T60
Corp.Ref.No.: 377119
SUBJECT:
NO/SLIPPING TORQUE CONVERTER CLUTCH (TCC) WHEN COMMANDED ON (SCREENS ADDED TO PWM SOLENOID)
MODELS AFFECTED:
1993 PARK AVENUE/ULTRA, LESABRE AND RIVIERA
CONDITION: (Figure 1)
Some 1993 vehicles equipped with a HYDRA-MATIC 4T60-E (RPO M13) transaxle built on or before Julian Date 026 (January 26, 1993) may exhibit
no TCC apply, or a slipping TCC condition (possible code 039).
NOTE:
The PWM will normally misoperate in either a full apply or a full slip mode. These conditions should not be confused with a TCC chuggle or TCC
shudder which is more likely engine performance related.
NOTE:
Excessive heat on torque converter may be visible when TCC slipping condition exists.
