3.1L (Lumina, Malibu & Grand Prix), 3.4L (Alero & Grand Am) & 3.8L (Bonneville, LeSabre & Park Avenue)
NOTE:
Information for Camaro and Firebird with 3.8L engine is not available.
Turn ignition on, then off. Turn ignition on, then off again. Start engine and run until normal operating temperature is reached. PCM will now properly control idle speed.