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Home >> Buick >> 2008 >> Allure CXL >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Mechanical - 5.3L) >> Repair Instructions - Off Vehicle >> Intake Manifold Installation

Intake Manifold Installation

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Intake Manifold-To-Cylinder Head Gaskets
    GM1272799Courtesy of GENERAL MOTORS CORP.
    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 intake manifold gaskets again. Install NEW intake manifold-to-cylinder head gaskets.
  1. Install NEW intake manifold-to-cylinder head gaskets (514).
  2. Fig 2: View Of The Intake Manifold Bolts
    GM1411912Courtesy of GENERAL MOTORS CORP.
  3. Install the intake manifold (500).
  4. Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads of the intake manifold bolts (512). Refer to Sealers, Adhesives, and Lubricants .
  5. Fig 3: Identifying Intake Manifold Bolt Tightening Sequence
    GM63222Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  6. Install the intake manifold bolts.

    Tighten: 

    1. Tighten the intake manifold bolts (1-10) a first pass in sequence to 5 N.m (44 lb in).
    2. Tighten the intake manifold bolts (1-10) a final pass in sequence to 10 N.m (89 lb in).

  7. Fig 4: View Of Fuel Rail Bolts & Ground Strap
    GM1807822Courtesy of GENERAL MOTORS CORP.
  8. Install the fuel rail (510). Refer to Fuel Rail and Injectors Installation .
  9. Fig 5: Identifying MAP Sensor
    GM1807816Courtesy of GENERAL MOTORS CORP.
  10. Lubricate the manifold absolute pressure (MAP) sensor seal (715) with clean engine oil.
  11. Install the seal onto the MAP sensor (714).
  12. Install the MAP sensor (714) and bolt (736).

    Tighten:  Tighten the bolt to 5 N.m (44 lb in).

  13. Fig 6: View Of EVAP Purge Solenoid Valve
    GM1411900Courtesy of GENERAL MOTORS CORP.
  14. Install the positive crankcase ventilation (PCV) hose - dirty air (716).