GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Avalanche - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 260078 Size: SH
  1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the positive crankcase ventilation (PCV) tube (1) from the intake manifold and valve rocker arm cover.
  3. Remove the PCV valve (2) from the PCV tube (1).

    4. Object Number: 647795 Size: SH
  4. Remove the vent hose from the throttle body and the valve rocker arm cover.
  5. Replace the hose/tube as necessary.

Installation Procedure

    Object Number: 647795 Size: SH
  1. Install the hose/tube as necessary.
  2. Install the vent hose to the throttle body and the valve rocker arm cover.

    3. Object Number: 260078 Size: SH
  3. Install the PCV valve (2) to the tube (1).
  4. Install the PCV tube (1) to the intake manifold and valve rocker arm cover.
  5. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .