1983 CHEVROLET B6P042 Recalls

Item Affected: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:HYDRAULIC

Date Announced: 10/16/1984

Description of Recall: VEHICLES HAVE A PRIMARY AND A RESERVE BRAKING SYSTEM. IF THE PRIMARY BRAKE SYSTEM BOOSTER FAILS, UNDER SOME CIRCUMSTANCES THE RESERVE SYSTEM MAY ALSO MALFUNCTION AND BRAKING ABILITY WILL BE IMPAIRED.

Conequence:

Action Need To Fix It: DEALER WILL INSTALL A NEW RESERVE BRAKE CONTROL MODULE AT NO COST TO OWNER.

Notes: VEHICLE DESCRIPTION: SCHOOL BUSES AND FORWARD CONTROL CHASSIS TRUCKS EQUIPPEDWITH HYPOWER DUAL HYDRAULIC BRAKE SYSTEMS.SYSTEM: SERVICE BRAKES; HYDRAULIC BRAKE SYSTEM, RESERVE BRAKES SYSTEMELECTRONIC CONTROL MODULE.CONSEQUENCES OF DEFECT: A REDUCTION OF BRAKING ABILITY IN A SITUATION WHENMINIMUM STOPPING DISTANCE IS REQUIRED COULD RESULT IN AN ACCIDENT WITHOUT PRIORWARNING.

Item Affected: SERVICE BRAKES, AIR:DRUM:CHAMBER

Date Announced: 08/03/1987

Description of Recall: SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION.

Conequence: BRACKETS CAN BREAK, RESULTING IN LOSS OF BRAKING ABILITYAT THAT FRONT WHEEL, AND POSSIBLY RESTRICTED STEERING, WHICH COULD LEAD TO AVEHICLE CRASH WITHOUT PRIOR WARNING.

Action Need To Fix It: AS NECESSARY, INSTALL NEW REINFORCED FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE ON VEHICLES WITHOUT ONE.

Notes: SYSTEM: BRAKESVEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH 7,500 LB. FRONT AXLE AND MEDIUMDUTY TRUCKS EQUIPPED WITH A 7,000 LB. FRONT AXLE.

Item Affected: SERVICE BRAKES, HYDRAULIC:FLUID

Date Announced: 07/07/1986

Description of Recall: SEVERE BRAKE CHATTER MAY CAUSE THE BRAKE CHAMBER MOUNTING BRACKETS ON EITHER SIDE TO DEVELOP CRACKS IN THE WELD AREA WHERE THE S-CAM SHAFT TUBE ATTACHES TO THE CHAMBER SUPPORT SECTION. CONSEQUENCE OF DEFECT: BRACKETS CAN BREAK, RESULTING IN LOSS OF BRAKING ABILITY AT THE FRONT WHEEL, AND POSSIBLY RESTRICT STEERING, WHICH COULD LEAD TO A VEHICLE CRASH WITHOUT PRIOR WARNING.

Conequence:

Action Need To Fix It: AS NECESSARY, REPLACE FRONT BRAKE CHAMBER MOUNTING BRACKETS AND INSTALL A FRONT BRAKE LIMITING VALVE.

Notes: SYSTEM: BRAKES. VEHICLE DESCRIPTION: SCHOOL BUSES EQUIPPED WITH A 7500 LB. FRONT AXLE AND WITHOUT A FRONT BRAKE LIMITING VALVE.