PHANTOM WIPE/SINGLE UNWANTED CYCLE OF WINDSHIELD WIPER. GMC Truck S15 Pickup - 2WD 1993

For 1990-2009 cars

# PHANTOM WIPE/SINGLE UNWANTED CYCLE OF WINDSHIELD WIPER

REVISION: 05/10/94

#### THIS BULLETIN IS BEING REVISED TO CHANGE THE MODEL SECTION.

#### 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 1994 CHEVROLET AND GMC TRUCK S/T PICKUPS 1993-94 CHEVROLET AND GMC TRUCK TOPKICK/KODIAK MODELS

#### 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).

5049372 C/K AND MEDIUM DUTY 22137728 G VAN 5049616 M/L VAN 5049618 S/T PICKUP 5049814 P CHASSIS

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 ABOVE WIPER MOTORS 1

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

#### WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME N3570 MODULE, PULSE WIPER CONTROL - REPLACE USE PUBLISHED LABOR OPERATION TIME

FIGURES: 0

#### CAPTIONS:

GENERAL MOTORS BULLETINS ARE INTENDED FOR USE BY PROFESSIONAL TECHNICIANS, NOT A "DO-IT-YOURSELFER". THEY ARE WRITTEN TO INFORM THOSE TECHNICIANS OF CONDITIONS THAT MAY OCCUR ON SOME VEHICLES, OR TO PROVIDE INFORMATION THAT COULD ASSIST IN THE PROPER SERVICE OF A VEHICLE. PROPERLY TRAINED TECHNICIANS HAVE THE EQUIPMENT, TOOLS, SAFETY INSTRUCTIONS AND KNOW-HOW TO DO A JOB PROPERLY AND SAFELY. IF A CONDITION IS DESCRIBED, DO NOT ASSUME THAT THE BULLETIN APPLIES TO YOUR VEHICLE, OR THAT YOUR VEHICLE WILL HAVE THAT CONDITION. SEE A GENERAL MOTORS DEALER SERVICING YOUR BRAND OF GENERAL MOTORS VEHICLE FOR INFORMATION ON WHETHER YOUR VEHICLE MAY BENEFIT FROM THE INFORMATION.

COPYRIGHT 1994 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.