So my truck doesn't always go into 4wheel dirve when u turn the knob there and the hubs in auto, but when u put it there in lock it always works. I'm am concerned about the axle seals i mean i just replaced them this fall when me and a buddy did the ball joints but when u put the truck in 4wheel drive and the hubs are in auto when it doesn't work there seems 2 be a real loud whissing noise from the left side(Driverside) kinda like a big shuttering noise from the left side. So does anyone think its the damn axle seals they were replaced this fall. If not steer me in the direction were 2 start. Plan on taking it 2 the dealership for that recall and want them 2 look at it but if the axle seal that isn't cheap and i don't wanna drop another grand plus in this truck since i just add all my mods so please help and give me what u think it is.