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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.0L (LSY)) >> Repair Instructions >> Intake Manifold Replacement >> Cleaning and Inspection Procedure - Conditional

Cleaning and Inspection Procedure - Conditional

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  1. Remove any remaining gasket or seal material from the following:
    • Intake manifold
    • Throttle body
  2. Clean the following intake manifold areas in solvent.
    • Intake manifold gasket sealing areas
    • Intake manifold passages
  3. WARNING:

    Refer to Safety Glasses Warning .

  4. Dry the intake manifold and throttle body with compressed air.
  5. GM5034101Courtesy of GENERAL MOTORS COMPANY

    Inspect the intake manifold for damage. (1)

  6. Inspect the intake manifold for cracks and fractures.
  7. Clean the throttle body sealing surface. (3)
  8. Clean the intake manifold to cylinder head sealing surface (2).
    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 intake manifold with warpage in excess of 0.50 mm (0.020 in) must be replaced.
  9. Replace the intake manifold as necessary.