4-HI didn't work but 4-LO did?

[ghunt81]

I was playing in some mud a couple days ago initially in 2WD until I started to get hung up. I switched the truck to 4-HI and the "4WD" light on the dash came on, but it was still only spinning the rear wheels. I then switched it to 4-LO and it pulled me right out. I used 4-HI several times during the winter and never had an issue with it not engaging. Why did it do this?

 

[redhurricane]

Might be a minor adjustment to the linkage to get it to seat into 4HI correctly. there's a slot on the bracket to allow for adjustment on the bar position in relation to the "gate" that the shift lever locks into.