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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1023 (Engine Mechanical - 6.6L (Lb7) (Repair Instructions 1 Of 4)) >> Repair Instructions (On-Vehicle & Off Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Positive Crankcase Ventilation (PCV) Valve Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the spring, diaphragm and cover.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  2. Install the PCV diaphragm cover screws.

    Tighten:  Tighten the screws to 4 N.m (35 lb in).

    3. Fig 1: View Of PCV Diaphragm Cover, Spring & Screws
    GM663631Courtesy of GENERAL MOTORS CORP.
  3. Position the heater outlet hose.
  4. Install the heater outlet hose nut (1) and bolt (2).

    Tighten: 

    • Tighten the nut to 9 N.m (80 lb in).
    • Tighten the bolt to 25 N.m (18 lb ft).

    5. Fig 2: View Of Heater Outlet Nut & Bolt
    GM665386Courtesy of GENERAL MOTORS CORP.
  5. Remove the tape from the turbocharger openings.
  6. Align the mark on the duct (2) with the mark on the turbocharger.
  7. Install the charged air cooler inlet duct to the turbocharger.
  8. Position the clamp (1) as shown for proper clearance.

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

    9. Fig 3: View Of Charged Air Cooler Inlet Duct & Clamps
    GM877281Courtesy of GENERAL MOTORS CORP.
  9. Install the charged air cooler outlet duct to the intake.

    Align the mark on the duct (3) with the mark on the intake.

  10. Position the clamp (1) as shown for proper clearance.

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

    11. Fig 4: View Of Charged Air Cooler Outlet Duct & Clamps
    GM877275Courtesy of GENERAL MOTORS CORP.
  11. Install the outlet duct to the turbocharger.
  12. Align the outlet duct alignment indicator (1) to the turbocharger alignment indicator (2).
    13. Fig 5: View Of Outlet Duct & Turbocharger Alignment Indicators
    GM813246Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The outlet duct must be fully seated against the MAT/IAT sensor with the edge of the seal in the vertical position.
  13. Install the outlet duct to the MAT/IAT sensor.
    14. Fig 6: View Of Outlet Duct
    GM813244Courtesy of GENERAL MOTORS CORP.
  14. Tighten the outlet duct clamps at the turbocharger and the MAF/IAT sensor.

    Tighten:  Tighten the clamps to 6 N.m (53 lb in).

  15. Install the upper intake manifold cover.
  16. Install the upper intake manifold cover to the outlet duct.
    17. Fig 7: View Of Upper Intake Manifold Cover, Outlet Duct & Clamp
    GM813243Courtesy of GENERAL MOTORS CORP.
  17. Tighten the outlet duct clamp at the upper intake manifold cover.

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

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