Cabin air filter

Just wondering how to install the cabin air filter in the old 2002 grand prix. Does the plastic trim just pop off under the windshield or is there fasteners that need to come off first. I just don't want to break it while taking it off. thanks.

There should be about 3 fasteners. One screws off and others are push pin type. Remove those and carefully pull up on the plastic trim piece (passenger side only).