GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1565277  Size: SH
  1. Remove the engine coolant air bleed pipe bolts (309).
  2. Remove the pipe (307).
  3. Remove the engine coolant air bleed cover bolts (312).
  4. Remove the covers (313).

  5. Object Number: 1552485  Size: SH
  6. Remove the seals (308) from the pipe and covers.
  7. Discard the gaskets.