GM Service Manual Online
For 1990-2009 cars only

    Object Number: 1874088  Size: SH
  1. Remove the positive crankcase ventilation (PCV) tube.

  2. Object Number: 1821625  Size: SH
  3. Remove and discard both PCV tube O-rings.

  4. Object Number: 1821624  Size: SH
  5. Remove the valve rocker arm cover bolts.
  6. Important: When removing the valve rocker arm cover make sure the gasket stays in place attached to the cylinder head.

  7. Remove the valve rocker arm cover.
  8. Cut the room temperature vulcanizing (RTV) in the channel where the intake, cylinder head and valve rocker arm cover meet with a suitable tool.
  9. Remove and discard the valve rocker arm cover gasket, valve rocker arm cover grommets and valve rocker arm cover bolts if they are serviced with the grommet.