GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 Avalanche - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 1201537 Size: SH
  1. Remove the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .
  2. Remove the positive crankcase ventilation (PCV) hose from the intake manifold and valve rocker arm cover.

    3. Object Number: 1235681 Size: SH
  3. Remove the vent hose from the throttle body and the valve rocker arm cover.
  4. Replace the hose as necessary.

Installation Procedure

    Object Number: 1235681 Size: SH
  1. Install the hose as necessary.
  2. Install the vent hose to the throttle body and the valve rocker arm cover.

    3. Object Number: 1201537 Size: SH
  3. Install the PCV hose to the intake manifold and valve rocker arm cover.
  4. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement .