K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Valve Body: All Technical Service Bulletins
A/T - Revised Spacer Plate
Number:
89-103-7A
Section:
7A
Date:
MARCH, 1989
Subject:
REVISED SPACER PLATE
Model and Year:
1989 C, G, K, R, V TRUCKS WITH 700-R4 TRANSMISSION
Figure 1 - Spacer Plate - 3-2 High Speed Orifice Removed
TO:
ALL CHEVROLET DEALERS
This bulletin covers a revised spacer plate for the 1989 THM 700-R4/HYDRA-MATIC 4L60 MPM, MWM, MZM, TUM and TXM models (5.7L Truck
models). The change in this spacer plate is the removal of the 3-2 high speed orifice for optimum 3-2 downshift timing (refer to Figure 1). No changes
were made to other calibration items.
Figure 2 - THM 700-R4/HYDRA-MATIC 4L60 Transmission Identification Information
