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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1021 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Intake Manifold Assemble

Intake Manifold Assemble

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Apply a very light film of clean engine oil to the evaporative emission (EVAP) purge valve O-ring seal.
  2. Install the EVAP purge valve.
  3. Apply thread sealer GM P/N 12345493, (Canadian P/N 10953488), or equivalent to the threads of the EVAP purge valve bolt.
    4. NOTE: Refer to Fastener Notice in Cautions and Notices.
  4. Install the EVAP purge valve bolt.

    Tighten:  Tighten the bolt to 8 N.m (71 lb in).

    5. Fig 1: View Of EVAP Purge Valve & Bolt
    GM471015Courtesy of GENERAL MOTORS CORP.
  5. Install the EVAP tube.
    6. Fig 2: View Of EVAP Tube
    GM471013Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Lubricate the port of the manifold absolute pressure (MAP) sensor with clean engine oil. Avoid dipping the sensor port directly into the lubricant or using a solid type of lubricant, as they may block the vacuum port signal.
  6. Install the MAP sensor.
  7. Install the MAP sensor bolt.

    Tighten:  Tighten the MAP sensor bolt to 12 N.m (106 lb in).

    8. Fig 3: View Of MAP Sensor & Grommet
    GM471023Courtesy of GENERAL MOTORS CORP.
  8. Lubricate the O-ring seal (415) of the oil fill tube with clean engine oil.
  9. Install the oil fill tube (416).
  10. Install the oil fill tube bolt (419).

    Tighten:  Tighten the oil fill tube bolt to 12 N.m (106 lb in).

  11. Install the oil fill cap (418).
    12. Fig 4: View Of Oil Fill Tube & Components
    GM1310034Courtesy of GENERAL MOTORS CORP.
  12. Install the throttle body gasket (501).
  13. Install the throttle body (502).
  14. Install the throttle body nuts (503).

    Tighten:  Tighten the throttle body nuts to 10 N.m (89 lb in).

    15. Fig 5: View Of Throttle Body, Nuts, Studs & Gasket
    GM1310037Courtesy of GENERAL MOTORS CORP.
  15. Install the vacuum plug (513).
    16. Fig 6: View Of Vacuum Plug
    GM1310056Courtesy of GENERAL MOTORS CORP.
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