WARNING: This page is about a different car, the 2004 Saturn Ion 3, 2004 Saturn Ion 2, and 2004 Saturn Ion 1. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the IAT sensor harness connector.
Fig 1: View Of IAT Sensor Harness Connector
Courtesy of GENERAL MOTORS CORP.
While twisting the IAT sensor, pull the sensor from the air cleaner resonator.