INFO. ON BRAKE SYSTEM COMPONENETS

SUBJECT: INFOMATION ON BRAKE SYSTEM COMPONENTS

MODELS: 1996 CHEVROLET P CHASSIS (MOTOR HOME) WITH RPO JB8 BRAKES

90 MOTOR HOME CHASSIS (SEE LIST BELOW) WERE TO BE BUILT WITH THE JB8 BRAKE CONFIGURATION BUT, MAY HAVE A COMBINATION OF JB8 MASTER CYLINDER (P/N 18029969) AND A JF9 BRAKE BOOSTER (P/N 15997191). THIS COMBINATION WILL NOT AFFECT BRAKING PERFORMANCE.

THE SERVICE PARTS IDENTIFICATION LABEL (SPID LABEL) ON THESE CHASSIS LISTS THE JB8 BRAKE SYSTEM COMPONENTS. IF EITHER THE MASTER CYLINDER AND/OR THE BRAKE BOOSTER ON THESE CHASSIS REQUIRE SERVICE REPLACEMENT, THE SAME PART NUMBER REMOVED MUST BE REINSTALLED.

THE JB8 MASTER CYLINDER AND JF9 BRAKE BOOSTER CAN BE VISUALLY IDENTIFIED. THE JB8 MASTER CYLINDER BRAKE FLUID RESERVOIR IS SHORTER THAN THE JF9 RESERVOIR. THE JF9 BRAKE BOOSTER HAS A BROADCAST CODE OF PB AND AN ACCUMULATOR IDENTIFICATION COLOR OR BLUE. ALSO, THE JF9 BRAKE BOOSTER WILL HAVE A 13MM SPACER BETWEEN ITSELF AND THE JB8 MASTER CYLINDER. THE JB8 BRAKE BOOSTER HAS A BROADCAST CODE OF KR AND A GOLD ACCUMULATOR IDENTIFICATION COLOR.

THE SERVICE PARTS CATALOG HAS BEEN UPDATED TO CONTAIN SERVICE PARTS INFORMATION FOR THIS BRAKE COMPONENT COMBINATION.

PARTS INFORMATION

PART NUMBER DESCRIPTION 18029969 MASTER CYLINDER JB8 15997191 BRAKE BOOSTER JF9 15997190 SUPPORT BRACKET JF9 15650152 MASTER CYLINDER SPACER JF9

PARTS ARE CURRENTLY AVAILABLE FROM GMSPO

VIN'S OF THE CHASSIS AFFECTED.

T3300019 T3300593 T3301385 T3300154 T3300607 T3301431 T3300207 T3300642 T3301561 T3300226 T3300651 T3301596 T3300238 T3300653 T3301600 T3300240 T3300655 T3301624 T3300248 T3300701 T3301684 T3300259 T3300706 T3301689 T3300265 T3300720 T3301701 T3300269 T3300750 T3301705 T3300286 T3300771 T3301720 T3300291 T3300773 T3301728 T3300294 T3300813 T3301759 T3300351 T3300815 T3301856 T3300386 T3300829 T3301910 T3300394 T3300834 T3301914 T3300398 T3300836 T3302095 T3300441 T3300843 T3302098 T3300447 T3300865 T3302103 T3300455 T3300912 T3302105 T3300491 T3300915 T3302130 T3300495 T3300919 T3302137 T3300504 T3300949 T3302206 T3300516 T3300953 T3302209 T3300520 T3300995 T3302215 T3300535 T3301049 T3302240 T3300539 T3301111 T3302264 T3300544 T3301215 T3302267 T3300554 T3301318 T3302283 T3300573 T3301329 T3302772

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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 1997 GENERAL MOTORS CORPORATION. ALL RIGHTS RESERVED.