V 3500 P/U 4WD V8-350 5.7L (1989)
Valve Body: All Technical Service Bulletins
A/T - Revised Spacer Plate Downshift Timing 3-2
GMC NUMBER:
89-T-44
GROUP:
7A - Automatic Transmission
DATE:
April, 1989
CORPORATE
NUMBER:
977105
SUBJECT:
REVISED SPACER PLATE (REMOVAL OF 3-2 HIGH SPEED ORIFICE) 3-2 DOWNSHIFT TIMING
MODELS:
1989 700-R4 TRUCK SERIES: C,G,K,R,V
Figure 1 - Spacer Plate - 3-2 High Speed Orifice Removed
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.
