[70stroker]

guys i think i have figured it out. It was hitting the floor just a little bit when tryin to go into 4lo I believe thats the reason as to why it sometimes would engage and others not depends how flexed my body was. I just notched the floor and have plans tonight to go test it out.

The whining gear sound noise is in 2 wheel drive and the hubs unlocked. Its for sure something in the powertrain, Its a nice steady humming while cruising and on throttle, you let out of throttle to return to coast/idle and it goes away, as soon as you give it gas again it comes back.