EricS

Short answer is no. I had a 4 month old 2012 Sierra Denali AWD (same setup as the Yukon AWD) and decided to flat tow my truck instead of wife's car, had to replace it with 4WD with capability to shift transfer case to neutral. Owners manual is very clear on the AWD not being flat towed so I made decision to replace it rather than modify it with pumps, etc. to make it work.