Bonneville V6-3800 3.8L Supercharged (1992)
Seals and Gaskets: By Symptom
Technical Service Bulletin # 9378
Date: 921101
A/T - Leak at Converter Seal
Bulletin Number: 93-7-8
Reference Number: 277148
Publish Date: 11/92
Subject:
TRANSAXLE FLUID LEAK AT CONVERTER SEAL (INSTALL NEW HELIX CONVERTER SEAL)
Models Affected:
1991-93 BONNEVILLE, GRAND PRIX AND TRANS SPORT MODELS W/4T60E
TRANSAXLE APPLICATIONS:
1991-93 HYDRA-MATIC 4T60-E (RPO M13)
TRANSAXLE MODELS:
ALL
CONDITION:
Some vehicles equipped with a 1991-93 HYDRA-MATIC 4T60-E (RPO M13) transaxle built on or before Julian Date 302 (October 28, 1992) may
exhibit a fluid leak between the helix converter seal and its bore. Under some conditions the helix converter seal may walk-out partially or completely.
Hot weather and/or extreme operating conditions are contributing factors to this concern.
CAUSE:
The above condition may be due to the taper of the helix converter seal bore.
