My passenger side window mirror all stopped working anyone know the problem 2003 Avalanche?

 

some options are:
broken wires in the door A-pillar
bad master switch
bad mirror motor
to figure out which one:
remove the passenger door trim panel, unplug the mirror connector and check for power to the connector when the switch is pressed. if power and grd are present the probem is in the mirror itself...replace it
if no power....check for power out of the switch...if ok, the wiring is broken...check in the rubber loom at the door A-pillar

 

The plastic gears are prone to crack and fail. You can buy brass replacements online and fix yourself if that's the problem.

Jim