Anyone have experience replaicing Windo trim?

On my Chevy 2010 Silverado crew cab, the window trim on the rear door, Part #1 in pic needs to be replaced. Near the top of the trim the trim broke and now lets water in. I bought the new trim, have looked on you tube and forums for days and can't find directions or videos on how to change it out. Do I need to take the inside of the door panel off to undo the clips on the old trim? I paid a lot for the new piece of trim and don't want to screw up how to install it. Any advice would be appreciated. Currently I put calk to keep it somewhat in place but that is a short term fix.

USUALLY, that stuff just snaps on.
Never replaced any on your model however.

I know there are four clips on the trim, and the new trim doesn't come with any clips. I have a feeling I need to have the window down and the inside door panel off to get the old clips out and put on the new trim.

I called a Chevy dealer today. He asked for my vin, looked it up and said no clips just push down hard and it locks in.

Howd it go?

It was an easy job, a little elbow grease to get it off, nothing anyone here couldn't do. Window works fine, no water in the door after rain.

Glad to hear it worked out and they didn't make it any harder.
The outside window trim on my '84 just pops off. Only 4-5 clips.