Sierra Classic 1500 4WD V6-4.3L (2007)
8. Connect the IAC valve electrical connector (2).
9. Install the air cleaner outlet resonator.
10. Perform the IAC reset procedure:
1. Turn the ignition to the ON position, wait for 5 seconds.
2. Turn the ignition to the OFF position, wait for 10 seconds.
3. Start the engine and check for proper idle speed.