Hello, and thank you for choosing Just Answer to help you with your questions!
Chances are the on/off button behind the glovebox was left unplugged. If they removed the motor, they would have had to unplug the wiring from the engine computer, which is located behind the glovebox. If the technician was in a hurry to get it all back together, they probably just overlooked the wire, which can be easy to do since the connector is very small, and typically will fall to where it doesn't stand out. You can remove the whole panel the glove box "snaps" in to and plug the button back in. There is 1 10mm bolt in the lower right hand corner, behind the plastic kickpanel cover (little plastic cover in the very corner of the floor) and a few philips head screws, one in the lower left corner, and a few in the top of the panel when you open the glove box. After that, there is just a couple clips holding it in, a quick tug and it will come right out. Take you 3 minutes at most. You'll see the back of the switch, and probably a couple wires with a black connector at the end dangling behind there. Plug it in and you should be fine.