I had a Jeep and have a Bronco now, and we go mild off-roading/mildest rock crawling occasionally and only used 4L in the steep or super bumpy situations, and it comes in very handy. We are not really expecting to take the Yukon on the same trails but want to know how far we can safely push it and enjoy the capabilities. We have a Yukon on order that’s estimated to be built in Jan/feb but I was just curious in what situations you’d use 4L or low range on a Yukon. We had a AT4 on order for the higher clearance but switched to Denali for the adaptive cruise control. The ground clearance seems to be pretty low to really go on any roads worse than a perfect dirt road and on those, you never use 4L anyway. So, does anyone ever use 4L on these vehicles?