well saturday i had my trailer on and long story short i needed 4x4 to get threw a field... sunday while i was i driving it "mysteriously" shifted into what it feels like 4 high... everytime i turn i feel the wheels grabbing but my light indicator isnt on? is there something going on with my front end??

 

the front diff doesnt unlock with vacuum, so jack one front wheel off the ground and turn the front driveshaft, if it doesnt turn the t-case is locked.

 

Agree with sunshine, also might want to try shifting into and out of 4hi a few times and see if it clears up

 

just got it back turned out to be ball joints and hub assembly thanks..back to work lol