GM Service Manual Online
For 1990-2009 cars only

Positive Crankcase Ventilation Hose/Pipe/Tube Replacement Rear

Removal Procedure


    Object Number: 1843631  Size: SH
  1. Remove the positive crankcase ventilation (PCV) foul air tube (1) from the upper intake manifold.
  2. Remove the PCV foul air tube (1) from the camshaft cover fitting.

Installation Procedure


    Object Number: 1843631  Size: SH
  1. Lubricate the PCV foul air tube (intake manifold side) O-ring seals with clean engine oil.
  2. Install the PCV foul air tube (1) to the camshaft cover fitting.
  3. Install the PCV foul air tube (1) to the upper intake manifold.

Positive Crankcase Ventilation Hose/Pipe/Tube Replacement Front

Removal Procedure


    Object Number: 1843627  Size: SH
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.
  2. Remove the positive crankcase ventilation (PCV) fresh air tube from the air cleaner outlet duct.
  3. Remove the PCV fresh air tube (1) from the camshaft cover fitting.

Installation Procedure


    Object Number: 1843627  Size: SH
  1. Install the PCV fresh air tube (1) to the camshaft cover fitting.
  2. Install the PCV fresh air tube to the air cleaner outlet duct.
  3. Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement.