NHTSA Campaign Id 74V027000; Date: Feb. 15, 1974
1973 Buick Apollo; 1974 Buick Apollo; 1973 Buick Century; 1973 Buick Regal; 1973 Chevrolet Belair; 1974 Chevrolet Belair; 1973 Chevrolet Biscayne; 1974 Chevrolet Biscayne; 1973 Chevrolet Blazer; 1974 Chevrolet Blazer; 1973 Chevrolet C10; 1974 Chevrolet C10; 1973 Chevrolet Camaro; 1974 Chevrolet Camaro; 1973 Chevrolet Caprice; 1973 Chevrolet El Camino; 1973 Chevrolet G10; 1974 Chevrolet G10; 1973 Chevrolet G20; 1974 Chevrolet G20; 1973 Chevrolet Impala; 1974 Chevrolet Impala; 1973 Chevrolet K10; 1974 Chevrolet K10; 1973 Chevrolet Monte Carlo; 1973 Chevrolet Nova; 1974 Chevrolet Nova; 1973 Chevrolet P10; 1974 Chevrolet P10; 1973 GMC C1500; 1974 GMC C1500; 1973 GMC G1500; 1974 GMC G1500; 1973 GMC G2500; 1973 GMC K1500; 1974 GMC K1500; 1973 GMC P1500; 1974 GMC P1500; 1973 GMC Sprint; 1973 Oldsmobile Cutlass; 1973 Oldsmobile Omega; 1974 Oldsmobile Omega; 1973 Pontiac Firebird; 1974 Pontiac Firebird; 1973 Pontiac Lemans; 1974 Pontiac Lemans; 1973 Pontiac Ventura; 1974 Pontiac Ventura
Component: Service Brakes, Hydraulic:power Assist:vacuum
Manufactured by: General Motors Corp.
Affected Units:: 1,218,387
Oldsmobile campaign no 74-c-5. Buick campaign no 73-c-3. GMC truck campaignno 74-c-06. Chevrolet campaign no 74-c-11. Pontiac campaign no 74-c-5. Possibility that the single diaphragm brake vacuum power booster was assembledwith demensional descrepancies in the vacuum power booster housing which mayreduce the torque required to unlock the front half of the housing from therear half. If this condition exists, the low unlocking torque coupled withother variations in the assembly may cause housing to rotate and disengage fromthe locking tabs resulting in separation of the two halves of the booster andcomplete loss of brakes. (correct by inspecting and staking the housing at twopoints to preclude rotation of the housing.
Date Owners notified by Manufacturer: Feb 18, 1974
Also see: