K 3500 Truck 4WD V8-454 7.4L (1994)
a shudder or vibration condition which can be felt in the truck during TCC lock or unlock.
Correction Replace the converter assembly with the New Converter Assembly.
Date Of Production The new Converter Assembly entered production January 11, 1993 (Julian Date 011) for 1993 HYDRA-MATIC
4L8O-E/4LBO-EHD models. On January 3, 1994 (Julian Date 003) the 1994 HYDRA-MATIC 4LBO-E/4L8O-EHD models for 6.5L diesel engines
(L65/L56/L57) began using the same torque converter assembly as the 7.4L engine application.
Parts Information:
Parts are currently available from GMSPO.
Warranty Information:
For vehicles repaired under warranty, use:
Labor Operation
Labor Time
K7020
Use published labor
operation time.
