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NHTSA Campaign 77V111000

SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER

Issued by GENERAL MOTORS CORP. · Reported Jul 15, 1977 · 12,963 vehicles affected

What's wrong

ON THE INVOLVED VEHICLES, THE BRAKE MASTER CYLINDER MAY HAVE BEEN ASSEMBLED WITH RESERVOIR MOUNTING BOLTS THAT WERE IMPROPERLY PROCESSED. THIS COULD MAKE THESE BOLTS BRITTLE AND SUBJECT TO BREAKING. IF BREAKAGE OCCURS, A BRAKE FLUID LEAK MAY DEVELOP BETWEEN THE RESERVOIR AND MASTER CYLINDER. LOSS OF BRAKE FLUID WOULD ADVERSELY AFFECT VEHICLE BRAKING CAPABILITY.

Remedy

DEALER WILL REPLACE THE MASTER CYLINDER RESERVOIR MOUNTING BOLTS WITH AN IMPROVED TYPE, WITHOUT CHARGE TO OWNER.

Vehicles affected by this recall

Make Model Year Units
CHEVROLET G30 1976 12,963
CHEVROLET G30 1977 12,963
CHEVROLET P30 1976 12,963
CHEVROLET P30 1977 12,963
GMC G30 1976 12,963
GMC G30 1977 12,963

Source: NHTSA Campaign 77V111000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.