REAR SEAT RATTLE/LOOSENESS (INSTALL REAR SEAT LATCH KIT)

SUBJECT: REAR SEAT RATTLE/LOOSENESS (INSTALL REAR SEAT LATCH KIT)

MODELS: 1992-94 CHEVROLET AND GMC TRUCK TWO-DOOR S/T UTILITIES

CONDITION:

SOME OWNERS MAY COMMENT THAT THE REAR SEAT BACK IS LOOSE AND RATTLES. THIS CONDITION IS MOST NOTICEABLE WHEN BRAKING AS THE BACK OF THE REAR SEAT MOVES FORWARD AND RATTLES AGAINST THE SEAT LATCH.

CAUSE:

THE SEAT LATCH MECHANISM ALLOWS THE SEAT BACK TO MOVE WHEN THE SEAT IS IN THE LATCHED POSITION.

CORRECTION:

THIS CONDITION CAN BE ELIMINATED BY INSTALLING A REAR SEAT LATCH KIT. THE KIT ADDS A BALL PLUNGER AND CATCH MECHANISM TO THE SIDE OF EACH SEAT LATCH. A CATCH ATTACHED TO THE LATCH BASE HAS A SLOT THAT SEATS THE BALL. THE PRESSURE EXERTED BY THE BALL RETAINS THE SEAT BACK IN POSITION, ELIMINATING THE MOVEMENT/NOISE. THE ADDITIONAL FORCE NEEDED TO OVERCOME THE BALL PLUNGER IS MINIMAL. THE SERVICE KIT CONTAINS ONE (1) LH SUPPORT BRACKET, ONE (1) RH SUPPORT BRACKET, TWO (2) BALL PLUNGERS, TWO (2) BASES, TWO (2) RUBBER BUMPERS AND ONE (1) INSTRUCTION SHEET. THE FOLLOWING SERVICE PROCEDURE SHOULD BE PERFORMED ON BOTH SIDES OF THE REAR SEAT.

SERVICE PROCEDURE:

1. REMOVE TRIM COVER. 2. REMOVE NUTS (2 PER SIDE) FROM WELD STUDS TO REMOVE SEAT FROM FLOOR. 3. REMOVE BOLT/SCREW FROM LATCH ASSEMBLY. 4. THREAD THE BALL PLUNGER INTO THE SUPPORT BRACKET WITH THE BALL END ORIENTED AS SHOWN (FIGURE 1, ITEM 6). 5. ATTACH SUPPORT BRACKET TO LATCH ASSEMBLY BY REINSTALLING BOLT/SCREW. 6. REINSTALL THE LATCH ASSEMBLY ONTO THE WELD STUDS. 7. INSTALL THE BASE OVER THE REAR WELD STUD ORIENTING AS SHOWN (FIGURE 1, ITEM 8). REINSTALL NUT ON THE REAR WELD STUD. 8. REINSTALL NUT ON FRONT WELD STUD. 9. MAKE NECESSARY ADJUSTMENTS BY ADJUSTING THE BALL PLUNGER AND/OR THE SUPPORT BASE. 10. TRIM OR FILE THE RUBBER BUMPER TO DECREASE ITS THICKNESS, IF NECESSARY, TO ENSURE THAT THE BALL PLUNGER HAS ENGAGEMENT INTO THE BASE (FIGURE 2). ADDITIONAL BUMPERS ARE PROVIDED IN THE SERVICE KIT IF IT SHOULD BECOME NECESSARY TO REPLACE THEM. 11. MODIFY TRIM COVER TO CLEAR THE SUPPORT BRACKET. USE THE TEMPLATE TO DETERMINE THE AMOUNT OF MODIFICATION NECESSARY (FIGURE 3, ITEM 1). 12. REINSTALL TRIM COVER.

SERVICE PARTS INFORMATION:

P/N DESCRIPTION QTY 12549150 REAR SEAT LATCH KIT 1/VEHICLE

PARTS ARE EXPECTED TO BE AVAILABLE FROM GMSPO ON 8/15/94.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME C7395 ANTI-RATTLE KIT INSTALL 0.5 HR

FIGURES: 3

CAPTIONS: FIGURE 1 - LH REAR SEAT ASM

1 LATCH ASM L + RH 2 BOLT/SCREW 3 WELD STUDS 4 COVER L + RH 5 MODIFY TRIM 6 BALL PLUNGER 7 SUPPORT BRACKET 8 BASE 9 BUMPER

FIGURE 2 - REAR SEAT LATCH KIT (INSTALLED POSITION) 1 LATCH ASM L + RH 2 BALL PLUNGER 3 SUPPORT BRACKET 4 BASE 5 BUMPER

FIGURE 3 - TRIM COVER CUTOUT TEMPLATE (FULL SIZE)

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.