Foundation components: master cylinderRecall 84V-068 · Chevrolet and GMC vehicles

GENERAL MOTORS CORP. recall 84V-068 covers 32,010 Chevrolet and GMC vehicles for a foundation components: master cylinder problem, reported to NHTSA on May 29, 1984.

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Vehicles repairedNo manufacturer report yet
Vehicles affected32,0104 models
ReportedMay 29, 1984Owners notified Jun 18, 1984
Complaints since0Same system, after the recall

Source: NHTSA recall 84V068000 and manufacturer quarterly reports. Started by the manufacturer.

What's wrong

The problem

UNWANTED AIR IS BEING DRAWN INTO THE BRAKE SYSTEM WHEN BRAKE PEDAL IS RELEASED. THIS IS DUE TO THE USE OF THE BENDIX MASTER CYLINDER IN COMBINATION WITH THE BENDIX HYDROVAC.

What to do

The fix

DEALER WILL CHECK TO SEE IF VEHICLE IS EQUIPPED WITH A BENDIX MASTER CYLINDER. IF SO, DEALER WILL INSTALL A TUBE AND HOSE ASSEMBLY AND REPAIR BRAKE SYSTEM. IF NEEDED, A NEW WAGNER MASTER CYLINDER WILL BE INSTALLED.

VEHICLE DESCRIPTION: MEDIUM TRUCKS EQUIPPED WITH SINGLE HYDRAULIC BRAKESYSTEMS.SYSTEM: SERVICE BRAKES; HYDRAULIC SYSTEM.CONSEQUENCES OF DEFECT: THE COMBINATION OF THIS DEFECT ALONG WITH EVERYDAY USEAND NORMAL WEAR, COULD RESULT IN DECREASED BRAKE PERFORMANCE AND EVENTUAL LOSSOF BRAKES. AN ACCIDENT COULD RESULT.

Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.

4 models

Vehicles in this recall

Built from December 1, 1979 to March 1, 1983. Not every vehicle in these model years is included; check by VIN.