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1984 GMC B6p042 Recalls

  1. Recall Description

    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.

    Possible Effects

    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

    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.

    Recall Manufacture Dates

    1982-10-01 - 1987-06-01

    Vehicles Affected

    7870

  2. Recall Description

    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.

    Possible Effects

    Action

    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.

    Recall Manufacture Dates

    1982-10-01 - 1986-01-01

    Vehicles Affected

    4299

  3. Recall Description

    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.

    Possible Effects

    Action

    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.

    Recall Manufacture Dates

    1981-11-01 - 1984-04-01

    Vehicles Affected

    1436

All b6p042 Recalls

Other GMC Recalls