It seems to me that in 4wd all the wheels shouold turn when you hit the gas, I know this much about 4wd from when I was little, my dad used to put his truck in 4wd low by placeing the shifter in N, and shifting the transfer case into 4 low, then he'd place the shifter in L and creep out of whatever he was stuck in, stop on solid ground, put the shifter nack in N, shift the transfer case back into 2 high, shift into drive and go on to wherever he was going. He taught me how to drive a 4wd, but I havent driven one since I was 16.