New guy here, 2019 Limited w/o 4L. For us that don't have 4L, what drive mode best emulates that? Coming from several rigs that had 4L, (and rear lockers) I'd like to hear some real life experiences. The drive modes seem kind of gimmicky to me.
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I buried mine to the frame in sticky mud on accident and the only way I was able to get out of the ‘situation’ was in 4L with the lockers engaged. Good to know it’s there when you need it.
The new clutch based AWD stuff is insanely quick in how it responds to tire slip.I've noticed that when I have it in 4A (assume A=Automatic, because who reads manuals) it resorts to rear wheel drive almost immediately. While it's dry I don't care, but with winter months upon us, I would say I'm a bit concerned with the truck being in RWD mode so much.
I was personally a bit concerned about not having a direct 4H and 4L. For example, driving across grass, you could put it in 4H even though you don’t necessarily need it, but it reduced the likelihood of slipping and tearing up the grass.
however, even though I’ve only got a few hundred miles, it looks like the torque allocation isn’t purely to the rear wheels even if it’s not slipping. As already said, it’s dynamic. Haven’t put it to a critical test, yet, though...I’ll let the newness wear off!
as for 4L, I don’t know: I’d play with the mode and see which one responds best for the condition. Like hill descent control (used it in a different vehicle and was extremely impressed) there’s technology in there which may exceed performance expectations, and what a solid 4wd lock and driver alone could do.