96 Yukon transmission/cluster issue

[Lakelife]

This morning leaving for work my Yukon wasn't going into low. It seems to stay in 3rd unless I manually downshift and will not hit OD. Also my gear indicator, tach,speedometer and trip/odometer stopped working at the same time. Any help is appreciated.

 

[SunlitComet]

check fuse 20 trans. burned out it will put the tranny in limp mode and kill off some gauges as well as gear indicator.