Not an A but still barely a Mopar...'12 Caravan lock actuator fail...

Get ready to do that job for real. That buzzing is another telltale sign the actuator is on its way out, and will stop working again, at any time. I didn't watch the video, I've been replacing those things for years. The inner door panel - the trim panel does come off easily, once you get the plastic retainers, designed to withstand an IED, to release. You have to remove the rubber glass surround weatherstrip, too, IIRC. You take off the rearward applique from the outside of the door off. Its held by two retainers and 3M tape. You might wreck it, so be prepared. There are a couple bolts and a nut (I believe a ground wire is attached to it) that hold the rear ward glass run track in place - remove them. There is one bolt through the center door hinge that will give you some clearance issues. You'll see ...just back it out. Pivot the rearward glass track toward the rear - you do it from the outside. Remove the nuts or back them out enough that hold the glass to the regulator, and start lifting the glass upward, from inside. Now go back outside and remove the glass. It will come up and outward toward the outward side of the van, through the cut out toward the rear of the door, where the glass run was that should be out of the way. There is JUST enough room to do this, and if you are not careful, the glass could break. Once out, disconnect all the cables, dont forget the forward latch, near the middle, and facing the front of the door, and wiring from the door, and outside release handle. Remove the three latch bolts from the rearward of the door. Now you can remove all the bolts from, and finesse the regulator and carrier out of the door. Its not going to fall out or go back in easy. When you get it out, you can then access the actuator. I may have forgotten some steps here, so if things feel like they are not coming apart right - look. Carefully reassemble everything. If I remember right, warranty used to give us about an hour and a half for that job, start to finish, and yes I could do it in that time. A non- tech DIY'er is either going to spend all day, or may be best to pay someone to do it. It all depends on the skills he or she has, and how they value their time.