GMC C30 Recalls

SELECT A YEAR

1979 1977 1976 1975

1977 GMC C30 Recall

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

Date Announced: 08/10/1977

Description of Recall: ON THE INVOLVED VEHICLES, THE NUTS WHICH ATTACH THE BRAKE MASTER CYLINDER TO THE HYDRO-BOOST UNIT MAY HAVE BEEN OVER-TIGHTENED. THIS COULD HAVE CAUSED STRIPPED THREADS AND CRACKED ATTACHING FLANGES. SHOULD THESE NUTS FAIL, THE PARTS MAY SEPARATE AND LOSS OF SERVICE BRAKES WOULD RESULT.

Conequence:

Action Need To Fix It: DEALER WILL INSPECT FOR CRACKS IN THE ATTACHING FLANGES; UNITS WITH CRACKS PRESENT WILL BE REPLACED. IF NO CRACKS ARE FOUND, THE STUDS WILL BE REMOVED AND THE HOLES DRILLED OUT. THE UNIT WILL BE REASSEMBLED USING BOLTS AND NUTS IN PLACE OF THE EXISTING STUDS.

Notes: VEHICLE DESCRIPTION: LIGHT TRUCKS.SYSTEM: SERVICE BRAKES; MASTER CYLINDER TO HYDRO-BOOST UNIT ATTACHING NUTS.CONSEQUENCES OF DEFECT: LOSS OF BRAKING CAPABILITY COULD OCCUR WITHOUT PRIORWARNING AND COULD CAUSE LOSS OF VEHICLE CONTROL AND AN ACCIDENT.

1976 GMC C30 Recall

Item Affected: SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE

Date Announced: 12/19/1975

Description of Recall:

Conequence:

Action Need To Fix It:

Notes: CHEVROLET CAMPAIGN NO 76C04, PONTIAC CAMPAIGN NO. 76C7, OLDSMOBILE CAMPAIGN NO.76C1, BUICK CAMPAIGN NO. 76C1. POSSIBILITY THAT THE COMBINATION VALVE, WHICHIS A PART OF THE HYDRAULIC SERVICE BRAKE SYSTEM MAY HAVE BEEN IMPROPERLYMANUFACTURED AND COULD MALFUNCTION. SHOULD THIS CONDITION OCCUR WHILE VEHICLEIS IN MOTION AT A TIME WHEN MINIMUM STOPPING DISTANCE IS REQUIRED. A VEHICLECRASH COULD OCCUR WITHOUT PRIOR WARNING. (CORRECT BY INSPECTING AND REPLACINGVALVE WHERE NECESSARY. ) PASSENGER CARS AND LIGHT TRUCKS.