on my 05 when autotrac or 4x4 is selected the truck pulls hard right and left back and forth.

Theres no lights on and doesn't seem to be a problem with the switch.

When disengaging from 4x4 it takes a long time.

I also have a 99 that's works great, the 05 is a lot different(as far as 4x4)

I know its not just a matter of slippage pulling it left and right cause on the same roads the 99 doesn't do it, nice and straight

Any body have an idea?????