Windshield Wiper - Unwanted Phantom Wipe/Single Cycle
Group Ref.: Chassis/Body ElectricalBulletin No.: 468201
Date: May, 1994
SUBJECT:
PHANTOM WIPE/SINGLE UNWANTED CYCLE OF WINDSHIELD WIPER (REPLACE PULSE WIPER CIRCUIT BOARD)
MODELS:
1993-94 CHEVROLET AND GMC TRUCK C/K, G, P, M/L MODELS
1993-94 CHEVROLET AND GMC TRUCK TOPKICK/KODIAK MODELS
1994 CHEVROLET AND GMC TRUCK S/T PICKUPS
CONDITION:
With the wiper switch in the off position one to ten minutes after turning the ignition switch on, the wipers will cycle once then return to the rest position.
CAUSE:
A leaking diode in the windshield wiper control circuit board.
CORRECTION:
Replace the circuit board with an updated version that eliminates the leaking diode.
Part numbers of affected wiper assemblies (production P/N found on black label of wiper motor).
Julian date codes of the above affected part numbers range from 17293X to 23093X. The X represents the shift the component was produced on (1, 2, or 3). Wiper motor assemblies with Julian date codes higher than 23193X have already been updated.
SERVICE PARTS INFORMATION:
P/N Description QTY
22101636 Circuit Board All 1
Above Wiper Motors
Parts are currently available from GMSPO.
WARRANTY INFORMATION:
For vehicles repaired under warranty, use:
Labor
Operation Description Labor Time
N3570 Module, Pulse Use Published
Wiper Control - Labor Operation
Replace Time