I can't answer any of your questions but I might be able to help. I have a 2020 2500HD Custom. My jump seat had no storage, I had to have storage so I went looking for a jump seat with storage. I ended up installing one with top and bottom storage out of a 2016 Tahoe. It did not bolt in. I had to make brackets out of 1" flat stock. Easy process just took time. I don't have the wiring for all of the charger ports in the Tahoe console but I have them on the dash. To get a direct fit for a 2020 I think you might have to buy one for a 2020. Watch EBay, these Municipalities buy new vehicles and rip the consoles and jump seats out to install their equipment.
When hitting a pothole or bump on the road and the truck steering wheel wobbled I was gpong 35-60 mph. When going down the dirt road and hit 2" rocks and the wheel wobbled I was going 5-15 mph. I knew this would be a waste of time.
I've owned trucks all by life. This isn't normal. Traded a 2010 in on this one that didn't do it. One reason I don't believe its normal is that the first time it did it I was about a mile from the dealership after picking it up, hit a pothole, the steering wheel wobbled and my reaction was "what was that!" This tells me that it was not normal, I was suprised by it.
Trying to gather any available info before going back to GM on this. First of all I love the truck. I have a steering wheel wobble when I hit a pothole bump or just about anything. The truck has the 20" tires, I'm told tire size has something to do with a wobble. Truck is totally stock with 7800 miles on it. Last Sunday I traveled some dirt roads. One in particular had recently been graded. There were some larger (2") rocks up on the hard surface of the dirt road. The steering wheel started wobbling back and forth a couple of inches and continued to do so. I stopped the truck to get the wobble to stop. I continued on and the wobble started and continued at any speed I went. I tried with both hands to stop the steering wheel wobble but could not. Any thoughts?? Thanks