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.
2002 Silverado 2500HD LB7 CCSB LT
ATP EFI Live by Rob Coddens, Edge CTS Insight, S&B CAI, PPE boost valve, Pro Fab AIH, AirDog II 165, Mike L built trans, ML-G converter, Allison deep pan, ML HD trans cooler, Nicktane CAT adapter, 3" Pro Fab DP, 5" straight pipe, Kryptonite upper control arms, Kryptonite tie rods, Kryptonite lower ball joints, Cognito braces, Firestone Ride Rite, B&W Turnover ball, B&W Companion, H2's with 305/70-17 Nitto TG's
2015 Crossroads Longhorn Rezerve 36DB