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Home >> GMC >> 2021 >> Yukon XL AT4 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - 5.3L (L84) Or 6.2L (L87) - Repair Instructions (10 Of 12) >> Repair Instructions >> Positive Crankcase Ventilation Foul Air Tube Replacement (L87) >> Installation Procedure

Installation Procedure

  1. GM5647507Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Some components not shown for graphic clarity.

    Positive Crankcase Ventilation Foul Air Tube (3) - Install

  2. Positive Crankcase Ventilation Tube Connector (1) @ Intake Manifold - Connect - Plastic Collar Quick Connect Fitting Service
  3. Positive Crankcase Ventilation Tube Connector (2) @ Positive Crankcase Ventilation Fitting - Connect - Plastic Collar Quick Connect Fitting Service
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