Join Date: Feb 2011
Location: Springtown, Texas
Both of our Z71's have the auto track transfer cases, and when there's snow on the ground we utilize the auto 4X4 feature. I have never noticed any popping, jerking, or any locking up whatsoever in either from the front. I will say that at low speeds in parking lots and while doing tight turning with auto 4X4 engaged I will feel the rear G80 lock up from time to time. Could it be you are noticing the rear diff lock up and push the vehicle? Being push button it does make really nice just to switch as you wish when you need or don't need it.
2006 Silverado 3500HD DRW LT3
Edge Evolution, 5" straight pipe, Kryptonite Upper Arms, Kryptonite Tie Rods, Kryptonite HD sway bar end links, Firestone Ride Rite, B&W turnover, 285/75 R16's
2015 Crossroads Longhorn Rezerve 36DB Andersen Aluminum Ultimate 5th Wheel Connection