GM Service Manual Online
For 1990-2009 cars only

Positive Crankcase Ventilation Hose/Pipe/Tube Replacement Air Intake to Oil Tank

Removal Procedure

  1. Remove the RH engine sight shield cover. Refer to Upper Intake Manifold Sight Shield Replacement .

  2. Object Number: 1705257  Size: SH

    Important: Prior to removal, mark the PCV tube quick disconnect fittings at the oil supply tank or they can be incorrectly installed.

  3. Disconnect the PCV tube quick connect fittings (3) from the front port on the oil tank.
  4. Disconnect the PCV tube quick disconnect fitting (2) from the air intake duct.
  5. Remove the PCV tube.

Installation Procedure

  1. Position the PCV tube.

  2. Object Number: 1705257  Size: SH
  3. Connect the PCV tube quick disconnect fitting (2) to the air intake duct.
  4. Connect the PCV tube quick disconnect fitting (3) to the front port on the oil tank.
  5. Install the RH engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .

Positive Crankcase Ventilation Hose/Pipe/Tube Replacement Rocker Covers to Oil Tank

Removal Procedure

  1. Remove the engine sight shield covers. Refer to Upper Intake Manifold Sight Shield Replacement .

  2. Object Number: 1705258  Size: SH

    Important: Prior to removal, mark the PCV tube quick disconnect fittings at the oil supply tank or they can be incorrectly installed.

  3. Disconnect the PCV tube quick disconnect fitting (4) from the rear port on the oil tank.
  4. Disconnect the PCV tube quick disconnect fitting (3) from the port on the RH front valve cover.
  5. Disconnect the PCV tube quick disconnect fitting (2) from the port on the LH rear valve cover.
  6. Remove the PCV tube (1).

Installation Procedure

  1. Position the PCV tube (1).

  2. Object Number: 1705258  Size: SH
  3. Connect the PCV tube quick disconnect fitting (2) to the port on the LH rear valve cover.
  4. Connect the PCV tube quick disconnect fitting (3) to the port on the RH front valve cover.
  5. Connect the PCV tube quick disconnect fitting (4) to the rear port on the oil tank.
  6. Install the engine sight shield covers. Refer to Upper Intake Manifold Sight Shield Replacement .