Fingers crossed bud, really once they have the PCM they will have to calibrate/update it and vin assign it and thats it. They will take it for a spin to make sure its working while hooked up to the starscan
Oh they will most likely try and keep your other PCM and usually its valid since they have to turn in a used one in order to order a new one but since you own both they better give it to you.
I hope so, I've been with this dealer since right after I bought the truck, they are the ones that brought it back to life after the wreck, usually they do right by me. We'll find out tomorrow.