REAR QUARTER BODYSIDE WINDOWS MAY NOT LATCH. Chevrolet Chevy K Pickup

REVISION: 09/06/95

THIS BULLETIN IS BEING REVISED TO ADD AN ALTERNATE SERVICE PROCEDURE AND PARTS INFORMATION. PLEASE DISCARD BULLETIN 56-15-01 (SECTION 10 - BODY). **********************************************************************

SUBJECT: REAR QUARTER BODY SIDE WINDOWS MAY NOT LATCH/POP OPEN (APPLY URETHANE ADHESIVE)

MODELS: 1994-95 CHEVROLET AND GMC TRUCK C/K MODELS WITH EXTENDED CAB (RPO A20)

CONDITION:

SOME CUSTOMERS MAY COMMENT THAT THE REAR QUARTER BODY SIDE WINDOWS MAY POP OUT WHEN THE DOOR IS CLOSED OR THAT THE LATCH SEEMS QUITE FLEXIBLE.

CAUSE:

THIS CONDITION WAS CAUSED BY THE IMPROPER APPLICATION OF URETHANE BY THE ASSEMBLY PLANTS THAT RESULTED IN INADEQUATE SUPPORT BEHIND THE LATCH.

CORRECTION:

TO CORRECT THIS CONDITION, APPLY A BEAD OF URETHANE ALONG THE BACK OF THE WINDOW FRAME AT THE EDGE OF THE SHEET METAL, OR INSTALL RIVETS AS INDICATED BELOW. THIS WILL PROVIDE THE NEEDED SUPPORT FOR THE LATCH TO MAKE IT MORE RIGID.

SERVICE PROCEDURE I

1. APPLY A GENEROUS BEAD OF URETHANE IN THE CREVICE BETWEEN THE REAR EDGE OF THE FRAME AND THE BODY SIDE OUTER PANEL. WHILE APPLYING THE BEAD, SPRING THE REAR EDGE OF THE FRAME OUTWARD. THIS IS DONE BY APPLYING HAND PRESSURE TO THE LATCH WITH THE WINDOW IN A LOCKED OPEN POSITION. FORCE AS MUCH URETHANE UNDER THE FRAME AS POSSIBLE (FIGURE 1). 2. CLEAN UP ANY EXCESS URETHANE WITH A RAG DIPPED IN DUPONT 3919 PREP-SOL OR EQUIVALENT. 3. ALLOW THE URETHANE TO COMPLETELY CURE BEFORE LATCHING THE WINDOW. LATCHING THE WINDOW PREMATURELY MAY SPRING THE FRAME AWAY FROM THE PREVIOUSLY APPLIED URETHANE. FOLLOW THE MANUFACTURER'S RECOMMENDATIONS REGARDING URETHANE CURE TIME AND TEMPERATURE. 4. IF THIS PROCEDURE DOES NOT PROVIDE THE NEEDED RIGIDITY, THEN PROCEED TO SERVICE PROCEDURE II.

SERVICE PROCEDURE II

1. SEPARATE THE FRAME FROM THE GLASS AT THE LATCH. 2. REMOVE THE TWO SCREWS THAT SECURE THE GLASS IN POSITION. REMOVE THE GLASS. 3. DRILL TWO 5/32" HOLES THROUGH THE PLASTIC WINDOW FRAME AND THE PINCH WELD FLANGE. THESE TWO HOLES SHOULD BE 25 MM APART AT THE CENTERLINE OF THE LATCH ASSEMBLY. 4. FILL THE DRILLED HOLES WITH BLACK RTV P/N 12345739. 5. INSTALL AND UPSET TWO RIVETS P/N 15646304. APPLY AN ADDITIONAL DAB OF RTV OVER THE HEAD OF EACH RIVET. 6. REINSTALL THE QUARTER WINDOW GLASS.

IMPORTANT: THIS PROCEDURE IS MOST EFFECTIVE WHEN THE WINDOW FRAME IS ORIGINALLY INSTALLED FAIRLY TIGHT TO THE SHEET METAL PINCH WELD FLANGE. IF THE INSTALLATION OF RIVETS CREATES AN OBJECTIONABLE BUCKLE IN THE WINDOW FRAME, THEN THE ENTIRE FRAME SHOULD BE REPLACED.

PARTS INFORMATION

P/N DESCRIPTION QTY 12345739 RTV (BLACK) 1 15646304 RIVET (SPECIAL) 4*

* SOLD IN PACKAGES OF 10.

PARTS ARE EXPECTED TO BE AVAILABLE FROM GMSPO ON 9/18/95.

WARRANTY INFORMATION:

FOR VEHICLES REPAIRED UNDER WARRANTY, USE:

LABOR OP DESCRIPTION LABOR TIME C0530 GLASS, QUARTER SWING OUT REPLACE (RH) USE PUBLISHED C0531 GLASS, QUARTER SWING OUT REPLACE (LH) LABOR OPERATION TIME

FIGURES: 1

CAPTIONS: FIGURE 1 - WINDOW FRAME INSTALLATION (USE ORIGINAL ART)

APPLY URETHANE OVER ENTIRE LENGTH OF WINDOW FRAME AT THIS LOCATION. (THIS SHOULD APPEAR AT THE TOP OF THE PAGE.)

Object Number: 93914 Size: MF

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.