WARNING: This page is about a different car, the 2002 Pontiac Montana, 2002 Oldsmobile Silhouette, and 2002 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Positive Crankcase Ventilation (PCV) Valve
Courtesy of GENERAL MOTORS CORP.
Disconnect the vacuum hose from positive crankcase ventilation valve (2).