NHTSA Campaign Id 83V105000; Date: Oct. 13, 1983
1983 Buick Century; 1983 Buick Skyhawk; 1983 Buick Skylark; 1983 Cadillac Cimarron; 1983 Chevrolet Cavalier; 1983 Chevrolet Celebrity; 1983 Chevrolet Citation; 1983 Oldsmobile Ciera; 1983 Oldsmobile Cutlass; 1983 Oldsmobile Firenza; 1983 Oldsmobile Omega; 1983 Pontiac 6000; 1983 Pontiac J2000; 1983 Pontiac Phoenix
Component: Service Brakes, Hydraulic:foundation Components:differential Proportional Valve
Manufactured by: General Motors Corp.
Affected Units:: 352,036
The brake proportioner valves may break and separate from the master cylinder. This would allow brake fluid to leak and would result in a partial loss of the brake system.
The dealer will inspect and, if necessary, replace all suspect valves.
Vehicle description: passenger vehicles. System: service brakes; brake proportioner valves. Consequences of defect: since this is a dual brake system, part of the systemwill still work and allow the vehicle to be stopped, but over a greaterdistance. Partial loss of the braking system at a time when minimum stoppingdistance is required could result in a vehicle accident without prior warning.
Date Owners notified by Manufacturer: Oct 20, 1983
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