Bonneville V6-3800 3.8L Supercharged (1992)
Torque Converter: All Technical Service Bulletins
A/T - Fluid Leak at Converter Seal, Replace Trans
Bulletin No.: T-93-42A
File in Group: 17
Number: 249
Corp.Ref.No.: 277148R
Date: Aug. 1993
SUBJECT:
TRANSAXLE FLUID LEAK AT HELIX CONVERTER SEAL
(REPLACE TRANSAXLE WITH SRTA UNIT)
MODELS AFFECTED:
1991-1993 VEHICLES WITH 4T60-E TRANSMISSION
This bulletin supersedes T-93-42 which should be discarded. This bulletin is being revised to change the repair procedure.
Some 1991 - 1993 vehicles equipped with a 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.
The above condition may be due to the taper of the helix converter seal bore and cannot be repaired at a dealership level.
To repair this condition begin with the "Fluid Leak Diagnosis" ("Automatic Transaxle On-Vehicle Service" Section of the 1991-1993 Service
Information Manual) which provides a detailed procedure in locating and repairing vehicle leaks.
If it is determined the leak is from the helix converter seal, remove the transaxle assembly and replace it with a Service Replacement Transmission
Assembly (SRTA).
Refer to the appropriate Service Information Manual "Automatic Transaxle On-Vehicle Service", Section 7A, for proper on-vehicle service to remove
and replace a Hydra-Matic 4T60-E transaxle.
For warranty purposes use Labor Operation K7000 "Transaxle Assembly Replace".
