GM Service Manual Online
For 1990-2009 cars only

    Object Number: 180640  Size: SH
  1. Remove the detent valve retaining pin (112) using diagonal pliers. Insert a wire into the center of the spring pin to prevent collapsing.

  2. Object Number: 180641  Size: SH
  3. Remove the detent valve sleeve (111) and seal (113).
  4. Remove the detent valve (110).
  5. Remove the detent valve spring (108).
  6. Inspect the detent valve sleeve for:
  7. • nicks
    • scratches
    • scoring
  8. Inspect the detent valve and the valve spring for:
  9. • nicks
    • scratches
    • scoring