R 3500 P/U 2WD V8-454 7.4L VIN W 4-bbl (1988)
FIGURE NO. 2 - THM 700-R4 WIRING DIAGRAM
SERVICE NOTES:
Any 1988 THM 700-R4 transmission models built with the Type 18 Solenoid Assembly, refer to models and Julian Dates listed above, must be serviced
with the Type 18 Solenoid Assembly and Wiring Harness Complete listed under "Service Parts Information". Any 1988 THM 700-R4 transmission
model built with a Type 15 Solenoid Assembly may be serviced with the new Type 18 assembly; however, there will be no wire connection for the 4-3
pulse switch. The 4-3 pulse switch, which can be left installed, will then function as a plug.
SERVICE PARTS INFORMATION:
Part No.
Description
10478100
Type 18 Solenoid Assembly - Complete
8654415
Type 15 Solenoid Assembly - Complete
Parts are currently available from GMSPO.