Axxe55
Retiretgtshit stirrer
Cheapest tool with throttle body relearn is $235.00. I would advise against buying one unless you plan to use this tool regularly. It's even possible that the tool won't work with your truck. Make a few phone calls to local shops and I'll bet you'll be on your way for less than the price of the tool. There could also be other unknown factors involved since none of us are actually looking at cvgunman's car in person.
For something as simple as this procedure, most shops would probably just charge about an hours labor to do the relearn. Maybe even less.