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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1675 (Engine Mechanical - 3.1L V6 - VIN (J)) >> Repair Instructions >> On-Vehicle repair Instructions >> Intake Manifold Replacement - Upper >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2003 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
  1. If removed, install the throttle body. Refer to THROTTLE BODY in Removal & Installation.
    Fig 1: Installing Throttle Body & Mounting Bolts
    G01967854Courtesy of GENERAL MOTORS CORP.
  2. Install the upper intake manifold gaskets.
  3. Install the upper intake manifold.
    NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
  4. Install the upper intake manifold bolts and the stud.

    Tighten 

    Tighten the bolts and the stud to 25 N.m (18 lb ft).

    Fig 2: Installing Upper Intake Manifold, Bolts & Gaskets
    G01967855Courtesy of GENERAL MOTORS CORP.
  5. Install the EGR valve. Refer to EGR VALVE in Removal & Installation.
  6. Install the MAP sensor bracket and the sensor. Refer to MANIFOLD ABSOLUTE PRESSURE SENSOR in Removal & Installation.
  7. Install the EVAP canister purge valve. Refer to EVAP CANISTER PURGE VALVE in Removal & Installation.
  8. Install the ignition coil bracket with the coils. Refer to IGNITION COILS in Removal & Installation.
  9. Install the thermostat bypass pipe coolant hoses (3,4) to the throttle body.
    Fig 3: Installing Thermostat Bypass Pipe Coolant Hoses To Throttle Body
    G01967856Courtesy of GENERAL MOTORS CORP.
  10. Install the following wiring harnesses to the retainers:
    • Engine wiring harness
    • Left side spark plug wire harness
    • Camshaft position (CMP) sensor wiring harness
  11. Install the left side spark plug wires to the spark plugs. Refer to SPARK PLUGS in Removal & Installation.
  12. Connect the electrical connectors to the following:
    • Evaporative emission (EVAP) canister purge valve
    • Throttle position (T/P) sensor
    • Idle air control (IAC) valve
    • Mass air flow (MAF) sensor
    • Exhaust gas recirculation (EGR) valve
  13. Install the vacuum hoses to the following:
    • Windshield washer system
    • Brake booster to the upper intake manifold
    • Manifold vacuum source
    • Evaporative emissions (EVAP) canister purge valve
    • Fuel pressure regulator
    Fig 4: Installing Vacuum Hoses
    G01967857Courtesy of GENERAL MOTORS CORP.
  14. Install the accelerator controls cable bracket with the accelerator control and the cruise control cables.
  15. Install the air cleaner intake duct.
  16. Connect the negative battery cable. Refer to BATTERY NEGATIVE CABLE DISCONNECT/CONNECT PROCEDURE Battery.
  17. Fill the cooling system. Refer to DRAINING AND FILLING COOLING SYSTEM in Engine Cooling.
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