Campaign - Brake Proportioner Valve Separated From M/C: Overview

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SUBJECT BRAKE PROPORTIONER VALVE MAY NUMBER: 83-C-6
SEPARATE FROM MASTER CYLINDER
DATE: Oct.. 17, 1983

MODELS/YEARS 1983 CUTLASS CIERAS, OMEGAS SECTION: 5
AND FIRENZAS
CONDITION

General Motors has determined that a defect which relates to motor vehicle safety exists on some 1983 Cutlass Ciera, Omega and Firenza cars. The brake proportioner valves used on some of these vehicles may break and separate from the master cylinder. This would result in a brake fluid leak and a partial loss of the brake system. These vehicles are equipped with a dual braking system; part of the system will still work and allow the vehicle to be stopped, but over a greater distance. Partial loss of the brake system at a time when minimum stopping distance is required could result in a vehicle crash without prior warning.