are you removeing all or just a few peices? they all are held on with clips and studs/nuts so you will need an 11/32" socket and wrench if the truck has good/new paint use a rag over top of the screwdriver to avoid screwing up the paint
ya it is all top side and bottom molding...Paint is coming after that but i dont' wanna destroy the trim trying to get it off! I figured most is clipped in...but the bolts visable or hidden under the rubber in the trim??
nuts will be under the sheet metal usualy at the ends get a flashlight,and take a good look behind you will find them just make sure to use wd40 and soak the studs 1st or you may break them if they are rusty but i can be done i did 2 trucks already never broke any thing just go slow and take your time