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NHTSA Campaign 81V010000

SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM

Issued by GENERAL MOTORS CORP. · Reported Jan 13, 1981 · 320,677 vehicles affected

What's wrong

FATIGUE CRACKS MAY DEVELOP IN THE BRAKE VACUUM BOOSTER HOUSING. THIS MAY CAUSE A VACUUM LEAK AND REDUCE THE EFFECTIVENESS OF THE BRAKES. AFTER PROLONGED USE, THE CRACKS MAY DEVELOP TO THE EXTENT THAT THE BOOSTER MAY SEPARATE FROM THE VEHICLE.

Remedy

VEHICLES WILL BE INSPECTED FOR FATIGUE CRACKS IN THE BRAKE VACUUM BOOSTER. THOSE WITHOUT CRACKS WILL HAVE A SUPPORT BRACE INSTALLED. THOSE WITH EVIDENCE OF CRACKING WILL HAVE A NEW BRAKE VACUUM BOOSTER AND SUPPORT BRACE INSTALLED. THIS SERVICE WILL BE PROVIDED AT NO CHARGE.

Vehicles affected by this recall

Make Model Year Units
CHEVROLET C20 1979 320,677
CHEVROLET C20 1980 320,677
CHEVROLET C30 1979 320,677
CHEVROLET C30 1980 320,677
CHEVROLET K20 1979 320,677
CHEVROLET K20 1980 320,677
CHEVROLET K30 1979 320,677
CHEVROLET K30 1980 320,677
GMC C20 1979 320,677
GMC C20 1980 320,677
GMC K20 1979 320,677
GMC K20 1980 320,677
GMC K30 1979 320,677
GMC K30 1980 320,677

Source: NHTSA Campaign 81V010000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.