Take the speaker out. There are 2 screws behind it.
There is a screw up by the hinge. May be concealed by carpet fuzz if you have carpet fuzz on door panels that year.
There is a screw underneath by the door latch opposite the hinge end. See fuzz note above.
Trying to remember... there will be screws in the latch handle area by the mirror, and then maybe one in the jamb up high opposite the hinge end. Just scour for them; the only hidden ones are behind the speakers and carpet fuzz as pointed out.
There is a pop in xmas tree type fastener behind the panel that you will need to pull the panel away from the door to release. You can see it at the top of this pic.
Once the panel is loose it will still be attached by the weather stripping along the window. Gently lift and wiggle to work it free, but don't go too far; there are wires still attached for the speakers and latch. Undo those and you are free. See second pic and you can see the wires dangling.
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