The Cabin filter is after the blower motor on the Xfire. It is easy to remove the Blower. Remove the access panel under the Glove box. 2 screws. Then you will see a square panel on the right with a couple of white or yellow latches. Unplug the wire connector next to this panel and slide these latches and the panel will come loose. The fan is directly above this panel and there are 3 or 4 screws that hold the fan in place. Remove the fan and use a shop vac or similar to vacuum out the debris.
I would also change the cabin filter which is to the left under a rectangular panel with 2 white or yellow slide latches.

Good Luck,
Mike