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.
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.
THE BOLTS THAT ATTACHED THE REAR SUSPENSION CONTROL ARMS TO THE FRAME AND AXLE MAY BE DEFECTIVE AND THE BOLT HEAD MAY SEPARATE FROM THE BOLT SHANK. THIS COULD ALLOW THE CONTROL ARM TO COME LOOSE.
Manufacturer remedy
THE DEALER WILL REPLACE ALL SUSPECT REAR SUSPENSION CONTROL ARM BOLTS PRIOR TO DELIVERY. THIS WILL BE DONE FREE OF CHARGE.
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.