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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 418 (Engine Mechanical - 4.2L 6-Cylinder (On-Vehicle)) >> Repair Instructions >> Intake Manifold Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install a new intake manifold gasket.
    2. Fig 1: Installing New Intake Manifold Gasket
    G01706241Courtesy of GENERAL MOTORS CORP.
  2. Install the intake manifold onto the engine and secure the manifold with the bolts.
    NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    Tighten 

    Tighten the intake manifold bolts to 16 N.m (12 lb ft).

  3. Install the generator. Refer to GENERATOR in Electrical.
  4. Install the brake hose to the booster.
  5. Lubricate the inner diameter of the crankcase ventilation hose with GM P/N 12345884 or equivalent.
  6. Install the crankcase ventilation hose.
    7. Fig 2: Installing Crankcase Ventilation Hose
    G01706242Courtesy of GENERAL MOTORS CORP.
  7. Install the MAP sensor electrical connector.
  8. Install the engine harness bracket. Secure the bracket with the bolt.

    Tighten 

    Tighten the engine harness bracket bolt to 50 N.m (37 lb ft).

    9. Fig 3: Installing Engine Harness Bracket
    G01706243Courtesy of GENERAL MOTORS CORP.
  9. Install the front differential vent hose to the engine harness bracket clip.
  10. Install all harnesses to the original location onto the engine harness bracket.
    11. Fig 4: Installing All Harnesses To Original Location Onto Engine Harness Bracket
    G01706244Courtesy of GENERAL MOTORS CORP.
  11. Install the PCM. Refer to POWERTRAIN CONTROL MODULE , in Engine Controls-4.2L
  12. Install the throttle body. Refer to THROTTLE BODY in Engine Controls.
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