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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1443 (Engine Mechanical - 4.2L (Ll8)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankcase Ventilation Hoses/Pipes Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Crankcase Ventilation Hose Location
    GM637635Courtesy of GENERAL MOTORS CORP.
  1. Disconnect the crankcase dirty air hose from the intake manifold.
  2. Disconnect the crankcase dirty air hose from the positive crankcase ventilation (PCV) orifice tube.
    3. Fig 2: Top Of Engine View
    GM732051Courtesy of GENERAL MOTORS CORP.
  3. Loosen the throttle body clamps (2).
  4. Disconnect the fuel pressure regulator vacuum supply hose from the air cleaner outlet resonator.
    5. Fig 3: View Of Engine Bolts & Air Cleaner Outlet Resonator
    GM730135Courtesy of GENERAL MOTORS CORP.
  5. Remove the 2 resonator to engine bolts (4) from the air cleaner outlet resonator (5).
    6. Fig 4: View Of Crankcase Clean Air Hose & Air Cleaner Outlet Resonator
    GM1226040Courtesy of GENERAL MOTORS CORP.
  6. Lift up the front of the air cleaner outlet resonator (2).
  7. Disconnect the crankcase clean air hose from the valve cover port.
  8. Disconnect the crankcase clean air hose from the air cleaner outlet resonator (2).
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