gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Brake Drum > < Brake Rotor Diagnosis and Service Guidelines|Page 8658
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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.

Brake Drum > < Brake Rotor Diagnosis and Service Guidelines|Page 8658