Drum: wheel cylindersRecall 85V-048 · Buick and Chevrolet vehicles
GENERAL MOTORS CORP. recall 85V-048 covers 1,810,000 Buick and Chevrolet vehicles for a drum: wheel cylinders problem, reported to NHTSA on April 29, 1985.
Source: NHTSA recall 85V048000 and manufacturer quarterly reports. Started by an NHTSA defect investigation.
The problem
EXCESSIVE ENLARGEMENT OF THE WHEEL CYLINDER PILOT HOLE IN THE REAR BRAKE BACKING PLATE COULD ALLOW THE WHEEL CYLINDER TO ROTATE AND CAUSE LOSS OF BRAKE FLUID. CONSEQUENCE OF DEFECT: A LOSS OF BRAKE FLUID LEADS TO LOSS OF REAR BRAKE ACTION, CREATING THE POTENTIAL FOR AN ACCIDENT. FRONT BRAKES WOULD REMAIN OPERATIONAL.
The fix
ADD A PART TO PREVENT WHEEL CYLINDER FROM ROTATING.
NOTE: OWNER NOTIFICATION WILL BEGIN AFTER SEPTEMBER 1, 1985 AND SHOULD BE COMPLETED BY SEPTEMBER 30, 1985.VEHICLE DESCRIPTION: MIDSIZE PASSENGER CARS AND SMALL TRUCKS. SYSTEM: REAR BRAKES.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.