np. The thing I like about it is it usually kicks in faster than 4wd and gives that little bit of extra traction. Yet, I still have 4wd if I bog down. Bog down in snow in 4wd and you better have a shovel! lol I made the mistake a couple times of putting it in 4wd and hitting the gas only to bury it to the frame. Already IN 4wd so that option is out, and 4LO is only really
usually in situations you need torque (like a steep hill, rock climb, etc). It's almost useless if you simply don't have enough traction.
First time was trying to cut through a parking lot. Looked all nice and smooth, not too bad. WRONG! Turned out to be wind swept snow 18" deep seamlessly blending with the piles from the plows. I got in 1 truck's length and stopped dead! Dug around all the wheels for half an hour, tried all the 4wd/locker combinations, and finally just put it in 4hi for the speed and rocked it back n forth. Finally got it moving back a little and just floored it. Tires spun, dug down, and finally pulled the truck out and to the side.
Second time a snowy dirt road magically changed to dirty snow before I realized it and sank to the frame. Same deal, no combo of 4wd/locker would get it out, and I had snow packed around the frame rails. After 20 minutes I said F-it and pulled out my hi-lift. I only needed to move the rear tires about 6 ft to get back on the road. So I jacked up the trailer hitch and tipped the jack over once the tire were above the ruts. Tires landed on deep snow, jack base dug into the road, and I continued jacking so it pushed the rear end over. I did that 3-5 times, tossed the jack in the bed, and just backed out. Thinking maybe I should get a set of chains for the rear "just in case".