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

Removal Procedure

    Object Number: 647793 Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Remove the positive crankcase ventilation (PCV) tube from the intake manifold and valve rocker arm cover.

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

Installation Procedure

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

    2. Object Number: 647793 Size: SH
  2. Install the PCV tube to the intake manifold and valve rocker arm cover.
  3. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.