GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2007 🢒 STS 🢒 Engine 🢒 Engine Mechanical - 4.4L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 1614010 Size: SH
  1. Release the lock tab (1) when disconnecting the positive crankcase ventilation (PCV) tube connections.

    2. Object Number: 1613993 Size: SH
  2. Disconnect the fresh air PCV tube (1) from the fitting on the underside of the supercharger inlet duct, during the removal procedure of the front section of the supercharger inlet duct assembly. Refer to Supercharger Inlet Duct Assembly Replacement .

    3. Object Number: 1613990 Size: SH
  3. Disconnect the PCV fresh air tube (1) from the left camshaft cover.

    4. Object Number: 1614012 Size: SH
  4. Disconnect the PCV foul air tube (1) from the PCV orifice fitting on the right camshaft cover.

    5. Object Number: 1685832 Size: SH
  5. Remove the supercharger assembly. Refer to Supercharger Replacement .

    6. Remove the PCV foul air tube from the fitting on the underside of the supercharger assembly.

Installation Procedure

    Object Number: 1685832 Size: SH
  1. Install the PCV foul air tube to the fitting on the underside of the supercharger assembly.
  2. Install the supercharger assembly. Refer to Supercharger Replacement .

    3. Object Number: 1614012 Size: SH
  3. Connect the PCV foul air tube (1) to the PCV orifice fitting on the right camshaft cover.

    4. Object Number: 1613990 Size: SH
  4. Connect the PCV fresh air tube (1) to the left camshaft cover.

    5. Object Number: 1613993 Size: SH
  5. Connect the fresh air PCV tube (1) to the fitting on the underside of the supercharger inlet duct, during the installation procedure of the front section of the supercharger inlet duct assembly. Refer to Supercharger Inlet Duct Assembly Replacement .