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Home >> GMC >> 2004 >> Yukon Denali >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (Repair Instructions -- 1 Of 3) -- 4.8L, 5.3L & 6.0L >> Repair Instructions (On-Vehicle & Off-Vehicle - Part 1) >> On-Vehicle Repair Instructions >> Crankcase Ventilation Hoses/Pipes Replacement >> Removal Procedure

Removal Procedure

  1. Remove the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4))  or Engine Sight Shield Replacement (6.0L (RPO LQ9)) .
  2. Remove the positive crankcase ventilation (PCV) hose from the intake manifold and valve rocker arm cover.
    3. Fig 1: View Of PCV Hose
    GM1201537Courtesy of GENERAL MOTORS CORP.
  3. Remove the vent hose from the throttle body and the valve rocker arm cover.
    4. Fig 2: View Of Throttle Body To Valve Rocker Arm Cover PCV Hose
    GM1235681Courtesy of GENERAL MOTORS CORP.
  4. Replace the hose as necessary.
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