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Home >> GMC >> 2022 >> Acadia SLE, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Engine Mechanical - 3.6L (LGX) - Repair Instructions) >> Repair Instructions >> Intake Manifold Overhaul >> Inspection Procedure

Inspection Procedure

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  1. GM4232641Courtesy of GENERAL MOTORS COMPANY

    Inspect the intake manifold for the following conditions:

    • Damage to the intake manifold bolt holes (1)
    • Damage to the intake manifold cover bolt holes (2)
    • Damage, debris or restrictions to the MAP sensor hole (3)
    • Damage to the throttle body sealing surface (4)
    • Damage, debris or restrictions to the throttle body hole (5)
  2. GM4232636Courtesy of GENERAL MOTORS COMPANY

    Inspect the lower intake manifold for the following conditions:

    • Damage, debris or restrictions to the (EVAP) (1)
    • Gouges or damage to the intake manifold sealing surfaces (2)
    • Damage to the intake manifold bolt holes (3)
  3. Inspect the lower intake manifold sealing surface for warpage.
    1. Locate a straight edge across the lower intake manifold sealing surface.
    2. Insert a feeler gauge between the lower intake manifold and the straight edge. An lower intake manifold with warpage in excess of 0.50 mm (0.020 in) must be replaced.
  4. Repair or replace the intake manifold as necessary.