If I get my 07 classic into axle deep snow the wheels won't turn. The truck just bogs down and revs to 2000 rpm. In light and modorate conditions it preforms beautifully in 4x but not in the deep stuff. I have heard that chev limits the power. Without using superchip, how do I fix this problem? The chip makes my tranny knock so I don't use it anymore. Please help!