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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1497 (Engine Mechanical - 4.2L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Crankcase Ventilation Hoses/Pipes Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2003 Oldsmobile Bravada, 2003 GMC Envoy XL, 2003 GMC Envoy, and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect the crankcase dirty air hose from the intake manifold.
  2. Disconnect the crankcase dirty air hose from the PCV orifice tube.
    Fig 1: Disconnecting Crankcase Dirty Air Hose
    G02128471Courtesy 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.
    Fig 2: Loosening Throttle Body Clamps
    G02128472Courtesy of GENERAL MOTORS CORP.
  5. Remove the 2 resonator to engine bolts (4) from the air cleaner outlet resonator (5).
    Fig 3: Removing Resonator To Engine Bolts From Air Cleaner Outlet Resonator
    G02128473Courtesy 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).
    Fig 4: Disconnecting Crankcase Clean Air Hose
    G02128474Courtesy of GENERAL MOTORS CORP.
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