Could be the switch. Try pulling the seat and testing individual motors with a couple of wires and a 12v or 14.4 or 18v tool battery. You can do it without pulling the seat, but it is a pretzel job. There are just two (tight and thread locked) bolts in the rear of the seat and a wiring harness under the trap carpet door to disconnect. That's it IIRC.
Don't forget to introduce yourself and your Cruze here.
same here..used all the available spots, just nowhere to bolt it up to where it kinda bulges I kind of think that is better as it is farther (further?) away from the exhaust except for the flap on the right of the rear of the opening. Less melted stuff.