WIPER TRANSMISSION LINKAGE NOISE OR WEAR

SUBJECT: WIPER TRANSMISSION LINKAGE NOISE OR WEAR (REPLACE MOTOR CRANK ARM AND TRANSMISSION LINKAGE ASSEMBLY)

MODELS: 1992-1993 CADILLAC ELDORADOS AND SEVILLES/STS

CONDITION:

SOME OWNERS MAY EXPERIENCE A NOISE OR DURABILITY PROBLEM WITH WIPER TRANSMISSION LINKAGE ASSEMBLIES DISPLAYING EXCESSIVE LOOSENESS OR WEAR AT THE LINKAGE JOINTS.

CAUSE:

THIS CONDITION MAY BE CAUSED BY WEAR OF THE METAL SOCKET WHICH MAY RESULT IN LOOSENESS AT THE LINKAGE JOINTS. FOR THE 1994 MODEL YEAR, A CHANGE WAS IMPLEMENTED TO INCORPORATE THE NEW DOUBLE DETENT PLASTIC SOCKET DESIGN FOR IMPROVED DURABILITY AND REDUCED OPERATING NOISE.

CORRECTION:

TO CORRECT THIS CONDITION REPLACE BOTH THE MOTOR CRANK ARM WITH GMSPO SERVICE PACKAGE, P/N 22137681, AND THE TRANSMISSION LINKAGE ASSEMBLY WITH GMSPO SERVICE PACKAGE, P/N 22137680.

TO REPAIR THIS CONDITION PERFORM THE FOLLOWING PROCEDURES AS SPECIFIED IN THE 1994 ELDORADO/SEVILLE/DEVILLE/CONCOURS NPI:

NOTE: WIPER SYSTEM MUST BE IN PARK POSITION. REFER TO FIGURE 1.

1. REMOVE BOTH WIPER ARMS.

2. REMOVE COWL VENT SCREEN.

3. SEPARATE THE WIPER TRANSMISSION SOCKET FROM THE MOTOR DRIVE LINK. REFER TO FIGURE 1.

4. REMOVE THE SIX SCREWS SECURING THE TRANSMISSION SPINDLES TO THE PANEL SHROUD.

5. REMOVE TRANSMISSION ASSEMBLY BY GUIDING IT THROUGH THE PLENUM CHAMBER OPENING.

6. REMOVE THE WIPER MOTOR CRANK ARM.

INSTALLATION:

1. REPLACE WIPER MOTOR CRANK ARM WITH GMSPO SERVICE PACKAGE, P/N 22137681.

2. REPLACE WIPER TRANSMISSION LINKAGE ASSEMBLY WITH GMSPO SERVICE PACKAGE, P/N 22137680. POSITION THE LINKAGE ASSEMBLY THROUGH THE OPENING IN THE PLENUM CHAMBER, THEN ALIGN TRANSMISSION ASSEMBLY AND LOOSELY INSTALL SIX ATTACHING SCREWS.

3. SECURE THE TRANSMISSION LINK SOCKET TO THE WIPER MOTOR CRANK ARM BALL USING THE WIPER TRANSMISSION LINK INSTALLATION TOOL, KENT-MOORE J-39529. REFER TO FIGURES 2 AND 3.

NOTE: WHEN THE WIPER TRANSMISSION IS REPLACED, INSPECT ALL FOUR SOCKETS RETAINING THE TRANSMISSION LINKS FOR ATTACHMENT TO THE SECOND DETENT PRIOR TO COMPLETING WIPER TRANSMISSION R+R. THIS WILL AVOID THE NEED FOR FURTHER REPAIR. REFER TO FIGURE 4.

4. ALIGN LINKAGE AND TORQUE ATTACHING SCREWS TO 8 N.M (71 LBS. IN.).

5. REINSTALL COWL VENT SCREEN.

6. REINSTALL WIPER ARM AND BLADE ASSEMBLIES.

7. CHECK WIPER BLADE OPERATION, WIPE PATTERN, AND PARK POSITION AS DESCRIBED IN THE 1994 CADILLAC ELDORADO/SEVILLE/DEVILLE/ CONCOURS NPI SECTION 8E.

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE: LABOR OPERATION: T6759 AT .7 HOUR

FIGURES: 4

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 1993 CADILLAC MOTOR CAR DIVISION, GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.