2001 Cadillac cabin filter

Removal (1997-2005)
Remove the left sound insulator panel. See LEFT SOUND INSULATOR PANEL.
On Seville models, twist the shift cable grommet and position the cable away from the filter access cover. It may be necessary to cut the tie strap, and to slice and peel back the foam insulation in order to position the shift cable grommet out of the way in order to access the filters.
On both models, remove the filter access cover (1). Push the cover down, then pull the cover out. See Fig. 1.
Fig. 1: Removing/Installing Filter Access Cover
Courtesy of GENERAL MOTORS CORP.
Remove the tape on the first filter.
Remove the first filter by pulling the filter tab. See Fig. 2
Fig. 2: Locating Filter Tab
Courtesy of GENERAL MOTORS CORP.
Remove the tape on the second filter.
Remove the second filter by pulling the filter tab.
Remove the third filter by pulling the filter tab.

Is the Left insulator panel the carpeted panel at the center consol. Like to the right of my leg when I am in the drivers seat?

From the supplied images, I would say yes, since I see the throttle pedal tot he left of the indicated panel and bolts.