4.0L (Aurora) & 4.6L (DeVille & Seville)
WARNING: This page does not describe the selected car, but rather 27 other vehicles, including the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, 2003 Saturn L200, and 2003 Saturn Ion 3. However, it is still accessible from the selected car via links, so may be relevant.
Start and operate engine at idle for 15 seconds. Turn ignition OFF. Wait 15 seconds. Restart engine. PCM will now properly control idle speed.