Service brakes, hydraulic: foundation components: drum: wheel cylinders
Manufacturer
GENERAL MOTORS CORP.
Vehicles affected
1,810,000
Reported to NHTSA
1985-04-29
Defect description
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.
Manufacturer remedy
ADD A PART TO PREVENT WHEEL CYLINDER FROM ROTATING.
REAR AXLE ASSEMBLY MAY HAVE AXLES THAT WERE IMPROPERLY MANUFACTURED. THIS CONDITION MAY RESULT IN SEPARATION OF THE AXLE SHAFT AND WHEEL ASSEMBLY FROM THE VEHICLE.
Manufacturer remedy
THE DEALER WILL INSPECT THE REAR AXLE TO DETERMINE WHETHER IT WAS MANUFACTURED AT THE BUFFALO PLANT. IF SO, THEY WILL MAKE AXLE MEASUREMENTS AND IF NECESSARY REPLACE OR MODIFY AFFECTED AXLE COMPONENTS WITHOUT CHARGE.
THE BOLTS THAT ATTACH THE LOWER REAR CONTROL ARM TO THE FRAME MAY FRACTURE. THE REAR CONTROL ARM SUPPORTS AND POSITIONS THE REAR AXLE. FRACTURE OF THE BOLTS WOULD ALLOW THE CONTROL ARM TO DROP FREE.
Manufacturer remedy
BOTH REAR CONTROL ARM ATTACHMENT BOLTS WILL BE REPLACED WITHOUT CHARGE.
UNDER CERTAIN DRIVING CONDITIONS, THESE VEHICLES CAN EXPERIENCE TEMPERATURES IN THE FRONT WHEEL OUTER BEARING AREA WHICH CAN AFFECT THE WHEEL BEARING GREASE. THIS CAN RESULT IN INADEQUATE LUBRICATION OF THE BEARING. THIS CONDITION MAY BE FURTHER AGGRAVATED BY IMPROPER ADJUSTMENT OF THE FRONT WHEEL SPINDLE NUT.
Manufacturer remedy
THE DEALER WILL INSTALL NEW FRONT WHEEL OUTER BEARINGS PACKED WITH GREASE AND THE SPINDLE WILL BE COATED WITH LUBRICANT. NEW GREASE RETAINER CAPS WILL ALSO BE INSTALLED TO MAINTAIN GREASE IN OUTER BEARING. THIS WILL BE DONE FREE OF CHARGE.
THE HUB PORTION OF THE FAN BLADE ASSEMBLY COULD CRACK DUE TO HIGH STRESS LEVELS GENERATED DURING ENGINE OPERATING CONDITIONS. EVENTUALLY, THE BLADE COULD BREAK APART AT THE HUB AND BLADE PIECES COULD BE PROPELLED INTO THE ENGINE. IF THE HOOD IS OPEN WHILE THE ENGINE IS RUNNING, THE FRAGMENTS WOULD BE FREE TO FLY FROM THE VEHICLE.
Manufacturer remedy
DEALER WILL REPLACE THE FAN BLADE ASSEMBLY WITHOUT CHARGE TO OWNER.
INCORRECT HEAD RESTRAINTS MAY HAVE BEEN INSTALLED ON THE INVOLVED VEHICLES. THIS FAILS TO COMPLY WITH FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 201, "OCCUPANT PROTECTION IN INTERIOR IMPACTS".
Manufacturer remedy
DEALER WILL REPLACE INCORRECT HEAD RESTRAINTS WITH IMPROVED HEAD RESTRAINTS.
Service brakes, hydraulic: foundation components: drum: wheel cylinders
Manufacturer
GENERAL MOTORS CORP.
Vehicles affected
636
Reported to NHTSA
1977-10-17
Defect description
THE REAR BRAKE WHEEL CYLINDER RETAINER ON THE INVOLVED VEHICLES MAY NOT HAVE BEEN PROPERLY INSTALLED. SHOULD THE WHEEL CYLINDER RETAINER BECOME COMPLETELY DISENGAGED, THE WHEEL CYLINDER COULD MOVE OUTBOARD CAUSING A LOSS OF BRAKE FLUID AND A LOSS OF REAR BRAKING ACTION.
Manufacturer remedy
THE DEALER WILL REPOSITION THE REAR WHEEL BRAKE CYLINDER RETAINERS, FREE OF CHARGE, ON ALL AFFECTED VEHICLES.
Owner complaints
A complaint is one person's report to a federal agency. It is not a finding.
No complaints recorded for this model year.
Safety recall repairs are provided free of charge by franchised dealers, regardless of vehicle age or mileage. This page displays aggregated data for the model year. To check recall status for a specific vehicle, search its VIN at nhtsa.gov.