Roadmaster Estate Wagon V8-350 5.7L (1993)
Torque Converter Clutch: All Technical Service Bulletins
New Calibration PROM - TCC Chuggle
Bulletin: 93-6E-17
Date: July '93
Ref.No.: 93-167-6E
Corp.Ref.No.: 376507
SUBJECT:
T.C.C. CHUGGLE (NEW CALIBRATION PROMS)
MODELS AFFECTED:
1992-93 ROADMASTERS WITH 5.7L ENGINE (RPO L05) VIN 7
CONDITION:
Some owners of Roadmasters equipped with 5.7L V8 engines (L05, VIN 7), may comment about a "chuggle" condition.
This bulletin addresses the vehicle/condition problems ONLY:
CAUSE:
Insufficient dampening of the torque converter and PROM calibration.
CORRECTION:
New calibration PROMs have been released to address the above vehicle/condition problems.
The PROMs are NOT RECOMMENDED for vehicles with OPTIONAL AXLE RATIOS or TRAILER TOWING PACKAGES.
Vehicles produced from mid-June 1993 through the end of the model year are expected to have this PROM change. Check PROM Scan ID.
PLEASE NOTE:
The above vehicles produced before December 16, 1991 (Julian Date 350) may have Hydra-matic 4L60 Model 2DDM Transmissions. Model 2DDM
Transmissions may contain torque converters with insufficient dampening.
Vehicles with Model 2DDM Transmission - Check dealer records to see if the torque converter has already been replaced with P/N 8650935 (Tagged
B/C: DGAF). It is not necessary to replace those torque converters with P/N 8650935.
Transmissions with torque converters with P/N 8656959 (Tagged B/C: DG5F) need to have the torque converter replaced with P/N 8650935.
Model 2BRM transmissions (produced after December 16, 1991) have the new torque converter.
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
Labor Operation
Code
Time
