Can I call to ask them to hold onto a part that I can pick up later the same day?

You can go on the website and reserve an item they'll only charge you a dollar to hold it but you can also pay online and go to the store and pick it up that's what I've done multiple times cuz I live in Flint and they're on 14 Mile so they're about an hour away from me but I bought a 3D printer on it and went to like 3 days later and picked it up went right to the front of the line of the pickup order and got my printer and was right out the door didn't even have to stand in line but yeah if you reserve it online it charges you a dollar to your car but that's it and then you can pay it off when you get there

For them to put it on hold I'm pretty sure you have to go to the website and purchase it and then they will hold it for you.

I'm sure if you called and wanted them to set a part aside for you they shouldn't have a problem with that.