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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1619 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Intake Manifold Installation

Intake Manifold Installation

WARNING: This page is about a different car, the 2003 GMC Sierra, 2003 GMC Cab & Chassis Sierra, 2003 Chevrolet Silverado, and 2003 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • The intake manifold, throttle body, fuel injection rail and fuel injectors may be removed as an assembly. If not servicing the individual components, install the intake manifold as a complete assembly.
  • DO NOT use the old intake manifold gaskets again. Install NEW intake manifold-to-cylinder head gaskets.
  1. Install NEW intake manifold-to-cylinder head gaskets (1).
    Fig 1: Installing Intake Manifold-To-Cylinder Head Gaskets
    G02107273Courtesy of GENERAL MOTORS CORP.
  2. Install the intake manifold.
  3. Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the intake manifold bolts. Refer to Sealers, Adhesives, and Lubricants .
    Fig 2: Installing Intake Manifold
    G02107274Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to FASTENER NOTICE .
  4. Install the intake manifold bolts.

    Tighten 

    1. 4.1. Tighten intake manifold bolts first pass in sequence to 5 N.m (44 lb in).
    2. 4.2. Tighten intake manifold bolts final pass in sequence to 10 N.m (89 lb in).
    Fig 3: Tightening Sequence For Intake Manifold Bolts
    G02107275Courtesy of GENERAL MOTORS CORP.
  5. Install the manifold absolute pressure (MAP) sensor (1), if previously removed.

    The electrical connector end of the sensor should be facing the front of the engine.

    Fig 4: Installing Manifold Absolute Pressure (Map) Sensor
    G02107276Courtesy of GENERAL MOTORS CORP.
  6. Install the positive crankcase ventilation (PCV) valve (2) and hose (1).
  7. Install the engine coolant air bleed hose and clamp onto the throttle body.
    Fig 5: Installing Positive Crankcase Ventilation (PCV) Valve & Hose
    G02107277Courtesy of GENERAL MOTORS CORP.
  8. Install the evaporative emission (EVAP) purge solenoid (3), bolt (2), and isolator (1).

    Tighten 

    Tighten the solenoid bolt to 10 N.m (89 lb in).

    Fig 6: Installing EVAP Purge Solenoid, Bolt & Isolator
    G02107278Courtesy of GENERAL MOTORS CORP.
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