overhead mileage display unit
 

I have a problem with my 2001 Monte SS, My overhead display doesn't come on right away when driving the car. Also the heater control system doesn't work i.e. the blower will not run until the display comes on then everything works normally. As it is getting cold in Wisconsin I need the heater blower to work. There must be something that control these things. Anyone know what the problem could be?

Ignition switch , had same issue with my 03.... I posted about it search my threads