I had a situation this week where I got the azz end buried in a pasture and went to 4 lock and nothing? I then proceed to go to neutral then 4 low and she eased right on out of that hole. I guess if the rears are spinning then it doesn't want to kick into 4 lock? I also am not used to electronic transfer cases as I noticed how it took it's sweet little time shifting into 4 low. Reguardless though this 14 was a beast in low.......Really need to get out and learn the capabilities and functions of our trucks guys, Im coming from a 06 Superduty and it's weird having no solid front axle or locking hubs.......
Its better to shift into 4wd before you get stuck because the t-case has an easier time shifting into 4wd if you are rolling slowly. If everything isn't meshed up just right the computer can refuse the shift.
Thunderhorse-Built: 25 Feb 2013 Warren, Michigan; Bought: 28 May 2013 Huskyliner Weatherbeaters, door edge guards, Line-X bedliner, Kryptek Typhon Cordura seat covers w/ MOLLE panels (review), Console Vault (install/review), Bilstein 4600s (thread), BFG T/A KO2 LT275/60/20s (thread), Borla XR-1 (thread-removed), Matte black Plasti-dipped center console bezel, BT catch can, Corsa 14405 cat back (video).