Compass, Ext Temp in Mirror

Just what the title says, the space for that is blank in the mirror.

Any ideas?

BTW 04 Z71

did you verify there is power going to the mirror by seeing passenger airbag indicator go from off to on when someone sits there? and You did turn the unit on correct? the compass and the temp is not automaticly turned on..

same problem i had when i took my hoe back to the stealership and they turned the stupid thing off on me.