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Home >> Cadillac >> 2021 >> CT4 Sport, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 170 (Engine Mechanical - 2.7L (L3B) - Repair Instructions (2 Of 3)) >> Repair Instructions >> Positive Crankcase Ventilation Tube Replacement (Fresh Air) >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the oil fill cap.
  2. GM5432171

    Intake Manifold Cover Bolt (1) - Remove [2x]

  3. Lift up on the front of the intake manifold cover (2).
  4. GM5432174

    Intake Manifold Cover (1) @ Upper Intake Manifold Bracket (2) - Remove

  5. GM5523067

    Disconnect the positive crankcase ventilation tube (1) at the evaporative emission canister purge solenoid valve, and the positive crankcase ventilation valve. Plastic Collar Quick Connect Fitting Service

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