First off if this is in the wrong place I want to say sorry ahead of time. But i have a 1998 Tahoe that has vortec 350 and 4l60e trans I just recently swapped in a gm kingpin Dana 60 and a 14 bolt rear. I also installed a np241c from a 90 suburban. My problem is I had the push button np243 transfer case. Well with that being said when I put my new case in 2hi or 4hi the trans shifts great but if I put it in 4lo the trans want shift at all. Is there a way to wire something to tell the trans to shift in 4lo? If this has been discussed before please post if not any help will be greatly appreciated.