For 1990-2009 cars

# INFO - NEW WINDSHIELD AND STATIONATY GLASS URETHANE

#### SUBJECT: INFORMATION - NEW WINDSHIELD AND STATIONARY GLASS URETHANE ADHESIVE CAULKING KIT

#### MODELS: 1990-99 ALL PASSENGER CARS AND TRUCKS

AS A RESULT OF A CHANGE FROM STANDARD VISCOSITY URETHANE TO HIGH-VISCOSITY URETHANE, A NEW URETHANE ADHESIVE CAULKING KIT, P/N 12346392, IS NOW AVAILABLE FROM GMSPO. THIS KIT CONTAINS THE "HIGH VISCOSITY" URETHANE ADHESIVE FOR THICKER AND MORE CONSISTENT BEAD SIZE APPLICATIONS. WHEN APPLIED PROPERLY, THIS NEW HIGH VISCOSITY URETHANE IN MANY INSTANCES WILL ELIMINATE THE NEED FOR DEPTH SETTING BLOCKS OR THE DAMMING MATERIAL TO CONTROL SQUEEZE OUT. THE FOLLOWING IS THE CONTENTS OF THE NEW KIT:

QUANTITY DESCRIPTION ======== ====================================================

1 CARTRIDGE OF "HIGH VISCOSITY" URETHANE ADHESIVE

1 NOZZLE FOR URETHANE ADHESIVE APPLICATION

1 10CC BOTTLE OF GLASS PREP PRIMER (CLEAR, #1)

1 10CC BOTTLE OF GLASS PRIMER (BLACK, #2)

1 10CC BOTTLE OF PINCHWELD PRIMER (BLACK, #3) FOR USE ON PINCHWELD FLANGES FOR EXTENDED (LONG METHOD) WINDSHIELD REPLACEMENTS AND URETHANE BONDED S.M.C. PARTS (CAMARO/FIREBIRD ROOF PANELS).

1 10CC BOTTLE OF PVC PRIMER (CLEAR #4) FOR USE WITH ENCAPSULATED GLASS (MODULES)

4 APPLICATOR DAUBERS

1 REVISED INSTRUCTIONS

LIKE THE STANDARD VISCOSITY URETHANE CONTAINED IN KIT (P/N 12346284) THAT IS REPLACES, IT IS A ONE-PART, MOISTURE CURE PRODUCT WITH CURING TIMES THAT VARY AS A RESULT OF CHANGES IN EITHER TEMPERATURE OR HUMIDITY. THE REQUIRED TIME FOR THIS NEW ONE-PART MATERIAL TO ENSURE A SAFE INSTALLATION OF STATIONARY GLASS BEFORE RETURNING THE VEHICLE TO THE CUSTOMER, IS A MINIMUM OF SIX (6) HOURS AT 70 DEGREES FAHRENHEIT (21 DEGREES CELSIUS) AND 30% RELATIVE HUMIDITY.

ALTERNATE EQUIVALENT MATERIALS FOR THIS KIT MAY BE AVAILABLE FROM A LOCAL GLASS REPAIR SHOP UNDER THE FOLLOWING PRODUCT NUMBERS:

GM KIT PRODUCT EQUIVALENT PRODUCT ================================= ================================

"HIGH VISCOSITY" URETHANE ADHESIVE ESSEX # U400HV

GLASS PREP PRIMER (CLEAR, #1) ESSEX # U401

GLASS PRIMER (BLACK, #2) ESSEX # U402

PINCHWELD PRIMER (BLACK, #3) ESSEX # U413

PVC PRIMER (CLEAR #4) ESSEX # U555

OTHER MANUFACTURERS OF URETHANE ADHESIVE THAT HAVE DOCUMENTED THEIR ABILITY TO MEET OR EXCEED GENERAL MOTORS SPECIFICATION #3651M (PERFORMANCE REQUIREMENTS FOR STATIONARY GLASS BONDING ADHESIVE SYSTEM SERVICE) ARE ALSO CONSIDERED TO BE EQUIVALENT TO GM KIT (P/N 12346392).

IN PREVIOUSLY PUBLISHED CORPORATE BULLETIN NUMBER 73-10-54, INCREASING CUSTOMER DEMANDS FOR FASTER SERVICE HAVE RESULTED IN QUICKER TWO-PART URETHANE ADHESIVES TO BE MADE AVAILABLE. ESSEX BETA SEAL U216* (TWO-PART URETHANE ADHESIVE) ALSO MEETS THE GENERAL MOTORS 3651M SPECIFICATION AND CAN BE USED WHEN THE CUSTOMER DEMANDS QUICKER REPAIR OF THE VEHICLE THAN THE ABOVE DESCRIBED ONE-PART PRODUCT CAN PROVIDE.

THIS TWO-PART, CHEMICAL CURE PRODUCT REQUIRES ONE (1) TO ONE-AND-ONE- HALF (1 1/2) HOURS FOR CURING BEFORE RETURNING THE VEHICLE TO THE CUSTOMER. THIS TWO-PART PRODUCT ALSO REQUIRES PRIMERS ON THE GLASS AND PINCHWELD SURFACES. THE PRIMERS AND APPLICATOR DAUBERS ARE NOT INCLUDED WITH THIS TWO-PART PRODUCT AND THEREFORE, MUST BE PURCHASED SEPARATELY. IN ADDITION, THIS TWO-PART PRODUCT REQUIRES A SPECIAL APPLICATOR (GUN) FOR PROPER MIXING AND DISPENSING OF THE ADHESIVE.

#### IMPORTANT:

THE U216 PRODUCT IS NOT AVAILABLE FROM GMSPO AND MUST BE OBTAINED LOCALLY.

* WE BELIEVE THIS SOURCE AND THEIR PRODUCTS TO BE RELIABLE. THERE MAY BE ADDITIONAL MANUFACTURERS OF SUCH PRODUCTS. GENERAL MOTORS DOES NOT ENDORSE, INDICATE ANY PREFERENCE FOR OR ASSUME ANY RESPONSIBILITY FOR THE PRODUCTS FROM THIS FIRM OR FOR ANY SUCH PRODUCTS WHICH MAY BE AVAILABLE FROM OTHER SOURCES.

WHEN USING EITHER OF THE ABOVE DESCRIBED PRODUCTS, MAKE SURE TO FOLLOW THE MANUFACTURER'S DIRECTIONS FOR APPLICATION AND DRYING TIMES. FOR INFORMATION REGARDING THE REMOVAL AND INSTALLATION OF STATIONARY GLASS, CONSULT THE APPROPRIATE SERVICE MANUAL.

#### PARTS INFORMATION:

P/N DESCRIPTION ============= =======================================

12346392 URETHANE ADHESIVE CAULKING KIT

PARTS ARE EXPECTED TO BE AVAILABLE FROM GMSPO, 10/12/98.

#### IMPORTANT:

THE PREVIOUSLY RECOMMENDED ADHESIVE KIT (P/N 12346284) WILL NO LONGER BE AVAILABLE FROM GMSPO ONCE INVENTORY IS EXHAUSTED.

FIGURES: 00 ATTACHMENTS: 00

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 1998 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.