GM Service Manual Online
For 1990-2009 cars only

    Object Number: 20175  Size: SH
  1. Remove the two spacer plate support bolts (20).
  2. Remove the spacer plate support (21)
  3. Remove the spacer plate (23) with the spacer plate filter (17) attached.
  4. Remove and discard the spacer plate to channel plate gasket (24).