[olopezm]

You're very welcome my friend!

If the dealer told you the problem was the IAC then that would be the first thing to check, you say you already ordered it; when the valve is dirty can stick and not propperly open or close according to the PCM commands. Cleaning it would get rid of all the dirt and make it move freely again. The light turned off because (in case CEL was pointing towards a IAC problem) the IAC works normally again and the air is being regulated properly.

IT IS RECOMMENDED that after you make any repairs in the engine compartment you should disconnect the negative battery terminal for 30 minutes in order for the PCM to erase the previous "performance" values and re-learn them again with the new components.

The plugs still have a low mileage, if they are in a good condition when you take them out (meaning they don't have any oil or carbon deposits, broken electrodes, etc.) you can just make sure they are correctly gapped and re-install them again. If you still want to replace them I've read in the forum that is best to use double platinum spark plugs.

Greetings,

Oscar.