K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Backing Plate: Testing and Inspection
Inspect backing plate shoe contact surface for grooves that may restrict shoe movement and cannot be removed by lightly sanding with emery cloth or
other suitable abrasive. If backing plate exhibits above condition, it should be replaced. Also inspect for signs of cracks, warpage and excessive rust,
indicating need for replacement.
