GM Service Manual Online
For 1990-2009 cars only

    Object Number: 412461  Size: SH
  1. Clean the crankshaft balancer.
  2. Clean the belt grooves of all dirt or debris with a wire brush.
  3. Caution: Wear safety glasses in order to avoid eye damage.

  4. Dry the crankshaft balancer with compressed air.
  5. Inspect the crankshaft balancer for the following:
  6. • Worn, grooved, or damaged hub seal surface
    • A crankshaft balancer hub seal surface with excessive scoring, grooves, rust or other damage must be replaced.

       Important: In order for the belt to track properly, the belt grooves should be free of all dirt or debris.

    • Dirty or damaged belt grooves
    • The balancer belt grooves should be free of any nicks, gouges, or other damage that may not allow the belt to track properly.
    • Minor imperfections may be removed with a fine file.
    • Worn, chunking or deteriorated rubber between the hub and pulley

    Object Number: 412461  Size: SH
  1. Clean the crankshaft balancer.
  2. Clean the belt grooves of all dirt or debris with a wire brush.
  3. Warning: Refer to Safety Glasses Warning in the Preface section.

  4. Dry the crankshaft balancer with compressed air.
  5. Inspect the crankshaft balancer for the following:
  6. • Worn, grooved, or damaged hub seal surface
      A crankshaft balancer hub seal surface with excessive scoring, grooves, rust or other damage must be replaced.

       Note: In order for the belt to track properly, the belt grooves should be free of all dirt or debris.

    • Dirty or damaged belt grooves
      The balancer belt grooves should be free of any nicks, gouges, or other damage that may not allow the belt to track properly.
      Minor imperfections may be removed with a fine file.
    • Worn, chunking or deteriorated rubber between the hub and pulley