G 20 Van V6-262 4.3L VIN Z (1993)
Torque Converter Clutch: All Technical Service Bulletins
A/T - Torque Converter Clutch Shutter
File In Section: 7 - Transmission
Bulletin No.: 37-71-10
Date: September, 1994
Subject:
Torque Converter Clutch Shudder (New Converter Assembly)
Models:
1991-1994 Chevrolet and GMC Truck C/K, R/V, P Models, G Vans
Transmission Applications:
1991-1994 Hydra-Matic 4L8O-E/4L80-EHD
This bulletin is being revised to add the 1994 model year, enhance condition description and update the parts Information for the 6.5L engine. Previous
divisional publication numbers were:
Chevrolet
93-114-7A
GMC Truck
93-7A-48
GM of Canada
93-7A-148
Condition
Some HYDRA-MATIC 4L80-E/4L80-EHD Transmissions may experience a Torque Converter Clutch (TCC) shudder concern during apply and/or
release. Torque converter clutch shudder is a condition that exists only when the TCC is locking or unlocking. TCC shudder will usually be described as
