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.

Consequence & remedy

Consequence: Not supplied

Remedy: ADD A PART TO PREVENT WHEEL CYLINDER FROM ROTATING.

84V073000 · Power Train:manual Transmission:lubricant

Jun 18, 1984

REAR WHEELS MAY LOCK SUDDENLY DUE TO INSUFFICIENT LUBRICATION BETWEEN MAINSHAFT AND FIRST GEAR.

Consequence & remedy

Consequence: Not supplied

Remedy: DEALER WILL REPLACE TRANSMISSION FLUID WITH A BLENDED FLUID AND IN ADDITION, WILL UPDATE THE MAINTENANCE SCHEDULE.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

PE90039 · Spare Tire Carrier Failure

Opened Feb 5, 1990 · Closed Jun 29, 1990

Status: closed (inferred from source dates) · Suspension

There is no summary currently available

EA86006 · Brake Backing Plate

Opened Nov 27, 1985 · Closed Nov 28, 1988

Status: closed (inferred from source dates) · Service Brakes, Hydraulic

SUMMARY:GM IS CONDUCTING A VOLUNTARY RECALL CAMPAIGN (85V-048)INVOLVING 2,136,826 VEHICLES. THE RECALL IS LIMITED TO VEHICLES BUILT ATCERTAIN ASSEMBLY PLANTS WHICH, ACCORDING TO GM, OVERTORQUED THE BRAKEPIPE NUT,THEREBY OVERSTRESSING THE WHEEL CYLINDER SUPPORT AREA OF THEBACKING PLATE.ANALYSIS:FRONT BRAKES PROVIDE SUFFICIENT BRAKING FOR PASSENGER CARSIN MOST NON-EMERGENCY SITUATIONS. ALL AFFECTED TRUCKS ARE INCLUDED INTHE CURRENT RECALL.IN MOST CASES THE PROBLEM IS DISCOVERED DURING BRAKEMAINTENANCE.THE RECALL APPEARS TO COVER THOSE GROUPS OF CARS WITH THEHIGHEST FAILURE RATES.STATUS:ANALYZING GM IR RESPONSE AND NEW COMPLAINT DATA. DRAFT CLOSINGREPORT BY 5/15/88.===