This is a very helpful thread.
I have a base 2020 2500 Tradesman 6.4L. I want to upgrade from 5 inch non-nav to 8.4 inch non-nav for the larger screen so I can actually see the backup camera, and for Android Auto.. I also plan to add, at some point, the radio control buttons to the steering wheel by swapping out the current wheel for one that has the buttons on the back. Auto climate control would be nice, too.
So rather than a simple swap of the 5 inch basic stuff for 8.4 inch basic stuff, I am complicating this and wonder how to make it all work. I have gone through a lot of stuff on this and other forums, and although it is all a but confusing, I think I figured out most of it:
1. I need to swap out the existing trim piece that has the a/c vents in it for one that will work with the 8.4 inch bezel. This part is not dependent upon anything else I am doing, so it should be 6VQ511AHAA
2. I need a radio bezel that has the heated steering wheel/seats buttons, and the version of the climate control knobs that are special for auto climate control. I think others have said that you don't actually need these to get auto climate control, but since I need a new bezel, I might as well get this. I think 6834028AD is the right bezel. Since I don't have, and won't be adding, heated seats, is there an issue here?
3. I think I need to add the temp sensor, sun sensor, and a harness. I don't have any of that in the truck now, but can follow the details in the thread that explains all of that. I don't think I need anything else, right?
4. I have 2 USB ports down below my upfitter switches, but nothing on the center seat console. I am assuming that this is my Media hub -2, and that is where I will plug in my android phone for Android Auto. I shouldn't need anything else, right?
5. The hard part: which radio do I need? This is where I am stuck. The vast number of part numbers for a uconnect 4 8.4 inch radio is overwhelming. When I was just thinking about the basic swap, it seemed that 68428584AC was the right radio. But will that radio also give me the other stuff I want?
I looked up a VIN for a vehicle that has non-nav, auto climate, heated steering/seats, but that didn't narrow it down for me. How do I figure out which radio I need? I also am wondering about speaker connections: I have 6 speakers in a regular cab, and I assume there are more than that in the larger cabs. Does that make a difference?