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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 - On Vehicle >> Intake Manifold Replacement >> Installation Procedure

Installation Procedure

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.
  1. Install the NEW intake manifold gaskets (514).
    2. Fig 2: View Of The Intake Manifold Bolts
    GM1411912Courtesy of GENERAL MOTORS CORP.
  2. Install the intake manifold (500).
  3. Apply a band of threadlock to the threads of the intake manifold bolts (512).
    4. Fig 3: Identifying Intake Manifold Bolt Tightening Sequence
    GM63222Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice .
  4. Install the intake manifold bolts.

    Tighten: 

    • Tighten the bolts a first pass in sequence to 5 N.m (44 lb in).
    • Tighten the bolts a first pass in sequence to 10 N.m (89 lb in).

    5. Fig 4: Identifying EVAP Purge Solenoid Valve
    GM1655017Courtesy of GENERAL MOTORS CORP.
  5. Install the EVAP purge solenoid bracket and solenoid.
    6. Fig 5: View Of MAP Sensor
    GM1411911Courtesy of GENERAL MOTORS CORP.
  6. Install the MAP sensor (714) to the intake manifold.
    7. Fig 6: View Of Oil Pressure Sensor Electrical Connectors
    GM1551867Courtesy of GENERAL MOTORS CORP.
  7. Connect the following electrical connectors:
    • EVAP purge solenoid (1)
    • MAP sensor (2)
    • Oil pressure sensor (4)
    • Valve lifter oil manifold (5)
    8. Fig 7: View Of Fuel Feed Line & Evaporative Emission (EVAP) Line
    GM1551868Courtesy of GENERAL MOTORS CORP.
  8. Position and install the EVAP purge solenoid tube (2) to the solenoid. Refer to Plastic Collar Quick Connect Fitting Service .
    9. Fig 8: Identifying PCV Foul Air Tube
    GM1616429Courtesy of GENERAL MOTORS CORP.
  9. Install the PCV foul air tube to the intake manifold and valve rocker arm cover. Refer to Plastic Collar Quick Connect Fitting Service .
    10. Fig 9: View Of Positive Crankcase Ventilation (PCV) Clean Air Tube
    GM1551864Courtesy of GENERAL MOTORS CORP.
  10. Install the PCV clean air tube to the air intake duct and valve rocker arm cover. Refer to Plastic Collar Quick Connect Fitting Service .
    11. Fig 10: View Of Brake Booster Vacuum Hose
    GM1551866Courtesy of GENERAL MOTORS CORP.
  11. Install the brake booster vacuum hose (1) to the intake manifold (2) and the booster check valve (3).
  12. Install the fuel injectors. Refer to Fuel Injector Replacement .
  13. Install the throttle body. Refer to Throttle Body Assembly Replacement .
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