C 2500 Truck 2WD V8-350 5.7L (1988)
Clutch: All Technical Service Bulletins
A/T - New Short Lip Piston Seal Design
GMC NUMBER:
89-T-81
GROUP:
7A - Automatic Transmlssion
DATE:
July, 1989
CORPORATE
NUMBER:
977121
SUBJECT:
NEW SHORT LIP PISTON SEAL DESIGN - FORWARD, 3-4, OVERRUN AND REVERSE INPUT CLUTCHES
MODELS:
1989 C/K
Figure 1
BULLETIN COVERS: (Figure 1)
New clutch piston seal design. The following clutch piston seals have been redesigned to include a shorter lip profile for ease of assembly:
Clutch Piston
Clutch Piston
Outer Seal
Inner Seal
*
3-4 * 3-4
*
Forward Forward
*
Overrun Overrun
*
Reverse Input Reverse Input
Clutch pistons have not changed.
