It should be noted that there are at least 3 types of 4WD.
Traditional, transfer case 4WD: I guess there could be some that are full-time 4WD, but I think these are all selectable by the driver. (up thru the JK Wrangler, this was what the Wrangler had.)
Automatic 4WD: Pretty much the same as above, but they monitor wheel conditions and engage the 4WD as needed. At least some of what I read would suggest that this system keeps part of the transaxle engaged, which I think could create additional issues with towing with a tow dolly, 2 wheels down, 2 wheels up.
- Not sure if Wrangler can be had with Auto-4WD. Might be a JL option.
- At least with GM vehicles that have the Auto-4WD option, you should be able to select 2WD, Neutral, traditional 4WD, and Auto-4WD.
All Wheel Drive, normally abbreviated as AWD. In these systems, all 4 wheels are always being driven. The system provides a certain percentage traction be transferred between the front and rear wheels depending on road conditions sensed. I don't think there would be a safe way to tow dolly one of these unless you can disengage the system that ties all 4 wheels together.
The Auto-4WD and AWD are totally different systems, but some people confused them because AWD seems like a very "automatic" version of 4WD.
Not sure this helps or hurts the understanding of the topic. I do not think the Wrangler is available in an AWD version. At least through the JK model, I do not think the Wrangler was available in an automatic 4WD version.
2020 Chevy Silverado 1500
Forest River Wildwood XLite 263BHXL