GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2006 🢒 GMC Sierra Denali 🢒 Engine 🢒 Engine Mechanical - 6.6L 🢒 Positive Crankcase Ventilation Hose/Pipe/Tube Replacement

Removal Procedure

    Object Number: 1334380 Size: SH
  1. Remove the intake manifold cover. Refer to Intake Manifold Cover Replacement .

    2. Important: After removing the charged air cooler duct, cover the turbocharger opening with tape in order to prevent entry of objects.

  2. Loosen the charged air cooler inlet duct connector to turbocharger clamp (1).

    3. Important: Do not use a screwdriver or other tool to pry the hose loose. The hose can be torn or damaged. Loosen the hose by twisting.

  3. Remove the charged air cooler inlet duct connector (4) from the turbocharger.

    4. Object Number: 1653035 Size: SH
  4. Using a pick or a small flat-bladed screw driver, remove and discard the quick connect fitting clip from the charged air cooler outlet duct.
  5. Remove the charged air cooler outlet duct from the intake.

    6. Object Number: 1335454 Size: SH
  6. Reposition the positive crankcase ventilation (PCV) hose clamp.
  7. Remove the PCV hose from the air inlet pipe.
  8. Remove the PCV hose from the clip on the top of the turbocharger.

    9. Object Number: 1335460 Size: SH
  9. Remove the left PCV hose/pipe bolt.

    10. Object Number: 1335456 Size: SH
  10. Remove the right PCV hose/pipe bolt.
  11. Remove the PCV hose/pipe.

Installation Procedure

    Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 1335456 Size: SH
  1. Install the PCV hose/pipe.
  2. Install the right PCV hose/pipe bolt.

    3. Tighten
    Tighten the bolt to 18 N·m (13 lb ft).


    Object Number: 1335460 Size: SH
  3. Install the left PCV hose/pipe bolt.

    4. Tighten
    Tighten the bolt to 18 N·m (13 lb ft).


    Object Number: 1335454 Size: SH
  4. Install the PCV hose to the air inlet pipe.
  5. Position the PCV hose clamp.
  6. Install the PCV hose to the clip on the top of the turbocharger.

    7. Object Number: 1653035 Size: SH
  7. Install a NEW quick connect fitting clip to the charged air cooler duct.
  8. Install the charged air cooler outlet duct to the intake.

    9. Object Number: 1334380 Size: SH
  9. Remove the tape from the turbocharger openings.

    10. Important: Lubricate the end of the duct prior to installation.

  10. Install the charged air cooler inlet duct connector (4) to the turbocharger.
  11. Tighten the charged air cooler inlet duct connector to turbocharger clamp (1).

    12. Tighten
    Tighten the clamp to 6 N·m (53 lb in).

  12. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .