I used the Chilton's manual to try to remove the corner lenses but something isn't right. It states to remove the screw and push forward and out, but herein lies the problem. It seems there is a screw inside, out of reach or course, that is holding the housing in. Am I not push/pulling hard enough?

 

Those things can be a pain.
The best way is after you remove the screw, pull the light out a little and you will see a ball socket holding the light in. Just spray that with some WD-40 and you should be all good.

 

your talking about the parking lights right? i just did that like 5 min ago... its a ***** to get them off the first time b/c you think that you will break the lense. Pretty much, just keep applying force b/c there is a tube that buldges out like a mushroom. yous keep pushing and it will eventually pop right off