One more question from me. When I engage the 4x4 in my 96 Tahoe, the 4x4 Low engages fine, but the 4x4 high does nothing (light flashes but does not engage or stay on high). Any suggestions?? Thanks!

i found that the 4 hi is very picky i cant remember but it either likes neutral or park one of those, and give it like 20 seconds to kick it