It was very cold today and my 4 hi dash indicator light did not light up when I tossed it in 4 hi. After work, the T case did not want to shift at all, and when it did go into 4hi it would not go back to 2 hi. I picked up some new ATF+4 today,could it be frezzing fluid or other cold related issues? It shifted fine a few weeks back so I don't think it is the linkage. Also, if I blew the fuse to the 12v port next to the "Cigar lighter" in the dash would this cause the indicator lamps not to light? Everything else works fine.