GM Service Manual Online
For 1990-2009 cars only

Important: Components that are to be reused must be marked, sorted or organized for assembly.

  1. Mark, sort, or organize the components for assembly. Refer to Separating Parts .
  2. Clean the components in cleaning solvent.
  3. Caution: Wear safety glasses in order to avoid eye damage.

  4. Dry the components with compressed air.

  5. Object Number: 178485  Size: SH
  6. Inspect the valve lifters for the following:
  7. • Bent or broken clip (1)
    • Worn pushrod socket (2)
    • Scuffed or worn sides (3)
    • If the valve lifter shows wear, inspect the engine block lifter bores for wear or damage.
    • Flat spots on the roller (4)
    • Loose or damaged pin (5)
    • Plugged oil hole (6)
    • Worn or damaged roller bearing
    • The roller should rotate freely with no binding or roughness.

    Object Number: 63233  Size: SH
  8. Inspect the valve lifter guides for the following:
  9. • For cracks or damage
    • Excessive wear in the lifter mounting bores