CHEVROLET C6 1983: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

General Information

NHTSA Campaign ID Number: 84V120000

Make Model Year
CHEVROLET C6 1983
Date Owners Notified Date Received by ODI Date Added to Database
1984-10-17 1984-10-02 1984-11-13

Production Dates: 1982-12-01 - 1983-08-01

Manufacturers Involved: General Motors, LLC

Component: SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE

Potential Number Of Units Affected: 3948

Report Initiator: MFR MFR Report

Summary

THE DUAL AIR RESERVOIRS OF SOME TRUCKS WERE EQUIPPED WITH CARBON STEEL SPRINGS INSTEAD OF STAINLESS STEEL SPRINGS, AS INTENDED. THE CARBON STEEL SPRING IS MORE SUSCEPTIBLE TO RUSTING THAN THE STAINLESS STEEL SPRING. THIS RUSTING COULD CAUSE THE CHECK VALVE TO FAIL, CAUSING TOTAL LOSS OF FRONT AND REAR BRAKES.

Remedy

THE AIR TANK WILL BE INSPECTED AND, IF NECESSARY, THE AIR VALVE WILL BE REPLACED WITH ONE CONTAINING A STAINLESS STEEL SPRING.

Notes

VEHICLE DESCRIPTION: MEDIUM TRUCKS EQUIPPED WITH AIR BRAKES.SYSTEM: SERVICE BRAKES; AIR SUPPLY CHECK VALVE.CONSEQUENCES OF DEFECT: IF AN AIR LEAK WERE TO OCCUR AND THE DRIVER DID NOTHEED WARNINGS, AN ACCIDENT COULD RESULT.