GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 Envoy - 4WD 🢒 Engine 🢒 Engine Mechanical - 6.0L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 1485981 Size: SH
  1. Remove the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the positive crankcase ventilation (PCV) foul air hose from the intake manifold and valve rocker arm cover.

    3. Object Number: 1522414 Size: SH
  3. Remove the PCV fresh air hose (2) from the valve rocker arm cover (1).

Installation Procedure

    Object Number: 1522414 Size: SH
  1. Install the PCV fresh air hose (2) to the valve rocker arm cover (1).

    2. Object Number: 1485981 Size: SH
  2. Install the PCV foul air hose to the intake manifold and valve rocker arm cover.
  3. Install the intake manifold sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .