C 1500 Truck 2WD V8-350 5.7L (1989)
Clutch: All Technical Service Bulletins
A/T - New Clutch Piston Seal Design
Number:
89-186-7A
Section:
7A
Date:
June 1989
Subject:
NEW SHORT LIP PISTON SEAL DESIGN
Model and Year:
1989 MODELS WITH 700-R4/4L60 TRANSMISSION
Figure 1
TO:
ALL CHEVROLET DEALERS
This bulletin covers new clutch piston seal design (Figure 1). The following clutch piston seals have been redesigned to include a shorter lip profile for
ease of assembly:
Clutch Piston Outer Seal
Clutch Piston Inner Seal
3-4
3-4
Forward
Forward
Overrun
Overrun
Reverse Input
Reverse Input
Clutch pistons have not changed.
