NHTSA Campaign Id 76V168000; Date: Oct. 22, 1976
1977 Buick Riviera
Component: Service Brakes, Hydraulic:foundation Components:differential Proportional Valve
Manufactured by: General Motors Corp.
Affected Units:: 158
General motors campaign no 77-c-4. Possibility that an incorrect brakecombination valve was installed. If this condition exists, the vehicle may notcomply with certain provisions of federal motor vehicle safety standard 105-75. (correct by inspecting and replacing brake combination valve when necessary). Passenger vehicle.
Date Owners notified by Manufacturer: Oct 22, 1976
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