This is real easy so I thought those wondering whether to do it and did not know how, I would make it a no-brainer. Open the new Blackwood trim pieces and locate the clip position. Then on the truck slide a credit card under the molding were the clips are at and push forward. Lift the old trim out of the clip and pull straight up in the direction the window would move. This slides it out of the track. Once it is out of the track pull the opposite end that is inserted into the side molding out. Then you reverse it to put them on. It took me longer to unwrap the dang trim and open the box.
You may have to pull a bit harder to lift the old trim out of the track. Don't be shy once you get it started its done. I put the windows down to make it easier. I doubt this "How To" was needed but every little thing helps. Plus I would not be me if I did not try to entice you into more mods........you did me like that....remember...lol