IMFORMATIONAL - KELSEY-HAYES 4WAL PROGRAM. GMC Truck S15 Pickup - 2WD 1992

For 1990-2009 cars

# IMFORMATIONAL - KELSEY-HAYES 4WAL PROGRAM

THIS BULLETIN IS BEING REVISED TO INFORM "GM OF CANADA" AND "NAES" DEALERS THAT THEY ARE NOT AUTHORIZED TO UTILIZE THIS SERVICE BULLETIN

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"GM OF CANADA" AND "NAES" DEALERS ARE NOT AUTHORIZED TO UTILIZE THIS SERVICE BULLETIN.

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REVISION: 08/08/94

THIS BULLETIN IS BEING REVISED TO ADD THE 1994 MODEL YEAR AND TO CHANGE CALLING TIMES. PREVIOUS DIVISIONAL PUBLICATION NUMBERS WERE:

CHEVROLET 93-226-5 GMC TRUCK 93-5E-86 OLDSMOBILE 93-T-67 ----------------------------------------------------------------------

REVISION: 10/25/94

THIS BULLETIN IS BEING REVISED TO ADD THE 1995 MODEL YEAR AND TO ANNOUNCE THE CANCELLATION OF THE PART RESTRICTION PROGRAM ON THE KELSEY HAYES EBC-4 4WAL BRAKE SYSTEM. PREVIOUS DIVISIONAL PUBLICATION NUMBERS WERE:

CHEVROLET 93-226-5 GMC TRUCK 93-5E-86 OLDSMOBILE 93-T-67 ----------------------------------------------------------------------

#### SUBJECT: INFORMATION ON THE KELSEY-HAYES 4WAL PROGRAM

#### MODEL: 1990-95 CHEVROLET AND GMC TRUCK LIGHT DUTY MODELS 1991-95 OLDSMOBILE BRAVADA WITH 4WAL SYSTEM (KELSEY-HAYES EBC(R)-4) ----------------------------------------------------------------------

EFFECTIVE NOVEMBER 1, 1994 THE PART RESTRICTION PROGRAM IS CANCELED ON THE KELSEY HAYES EBC-4 4WAL BRAKE SYSTEM. IT WILL NO LONGER BE NECESSARY TO CONTACT THE KELSEY HAYES TECHNICAL ASSISTANCE CENTER (K-TAC) TO OBTAIN AN EBC-4 BRAKE PRESSURE MODULATOR VALVE (BPMV) HOWEVER, K-TAC WILL CONTINUE TO BE AVAILABLE FOR ANTILOCK BRAKE SYSTEM DIAGNOSTIC AND REPAIR ASSISTANCE.

THE FOLLOWING MODELS ARE EQUIPPED WITH THE EBC-4 4WAL BRAKE SYSTEM:

- 1993-95 G-VAN - 1990-95 M/L VAN - 1991-95 S/T TRUCKS - 1992-94 C/K SUBURBANS AND UTILITIES

#### NOTICE: ALL 1995 C/K MODELS ARE EQUIPPED WITH THE NEW KELSEY HAYES EBC-310 4WAL BRAKE SYSTEM. THE PART RESTRICTION PROGRAM AS DESCRIBED IN SERVICE BULLETIN 46-50-07 REMAINS IN EFFECT ON THESE MODELS.

IF CAREFUL DIAGNOSIS INDICATES THAT A REPLACEMENT EBC-4 BRAKE PRESSURE MODULATOR VALVE (BPMV) IS REQUIRED, ORDERS CAN BE PROCESSED DIRECTLY THROUGH GMSPO. A CORE CHARGE OF $250 WILL BE IN EFFECT. CORE RETURN PROCEDURES WILL BE INCLUDED IN EACH SHIPMENT. TO RECEIVE CORE CREDIT THE BPMV CORE RETURN PROCEDURES MUST BE FOLLOWED.

THE FOLLOWING KELSEY HAYES TECHNICAL ASSISTANCE (K-TAC) PHONE NUMBER IS FOR DEALER USE ONLY:

1-800-546-4ABS (4227)

PRIOR TO CALLING K-TAC FOR DIAGNOSTIC AND REPAIR ASSISTANCE, PLEASE COMPLETE THE ATTACHED DIAGNOSTIC SHEET.

#### NOTE: K-TAC DOES NOT HAVE WARRANTY APPROVAL AUTHORITY. IF THERE IS A CONCERN FOR REPAIRS, IT IS RECOMMENDED THAT YOU CONTACT YOUR DIVISIONAL REPRESENTATIVE FOR APPROVAL PRIOR TO MAKING REPAIRS.

K-TAC PHONES WILL BE MANNED FROM 8:00 A.M. UNTIL 7:00 P.M. EST, MONDAY THROUGH FRIDAY. THE REMAINDER OF THE TIME AN AUTOMATED ANSWERING MACHINE WILL TAKE THE INFORMATION FOR A CALLBACK.

THE INFORMATION YOU PROVIDE WILL HELP TO QUICKLY IDENTIFY AND CORRECT CONDITIONS WHICH AFFECT OUR CUSTOMERS' SATISFACTION.

FIGURES: 1 USE ART FROM ORIGINAL BULLETIN ATTACHMENTS: 1 (DIAGNOSTIC SHEET) CAPTIONS: FIGURE 1 (SAMPLE BAR CODE LABEL)

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 GMC TRUCK DIVISION, GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.