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.
ACCELERATOR PUMP LEVER RETAINING PIN MAY LOOSEN AFTER REPEATED HEAVY ACCELERATOR PEDAL APPLICATIONS. THIS COULD CAUSE THE THROTTLE TO BECOME STUCK IN THE OPEN POSITION.
Manufacturer remedy
DEALER WILL INSTALL A SPECIAL COTTER PIN, TO RETAIN THE ACCELERATOR PUMP PIN, AND A SPRING CLIP THRUST WASHER ON THE ACCELERATOR PUMP LINK.
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.
THE ELECTRO-CLEAR REAR WINDOW DEFOGGERS CONTAIN A DEFECT WHICH CAUSES THE GLASS TO SHATTER WITHOUT IMPACT DURING OR SOME TIME AFTER USE OF THE DEFOGGER. VERTICAL ELECTRICAL STRIPS MAY DETERIORATE AND CAUSE HOT SPOTS THAT CAN RESULT IN BREAKAGE OF THE REAR GLASS.
Manufacturer remedy
VEHICLES WILL BE INSPECTED FOR PRESENCE OF A PARTICULAR WEATHERSTRIP. IF PRESENT, A LAYER OF A SPECIAL CONDUCTIVE EPOXY WILL BE ADDED TO THE VERTICAL BAR ON THE REAR WINDOW GLASS. THIS EPOXY IS A NEW CONDUCTIVE MATERIAL WHICH WILL NOT REACT WITH THE WEATHERSTRIP.
Owner complaints
A complaint is one person's report to a federal agency. It is not a finding.
Component
Complaints
Median mileage
Fuel system, gasoline: storage: tank assembly
2
—
Electrical system: wiring: front underhood
1
—
Tires: sidewall
1
—
Tires: temporary/emergency spare tire
1
—
Visibility: windshield wiper/washer
1
—
The 1979 model has about 1.5 times as many complaints as this one. The 1981 model has 2 times as many complaints as this one. These figures reflect raw complaint counts, not failure rates. Higher-selling model years naturally receive more complaints.
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.