No dome light on 2500 chevy express van

Dome light on 2500 express van does not work, over ride does not work, have checked all fuses?? and wire to switch I am able to dim dash lights but no dome light.????

Dome light on 2500 express van does not work, over ride does not work, have checked all fuses?? and wire to switch I am able to dim dash lights but no dome light.????
What year?
Check bulbs and grounds and wiring.
Are you getting power and ground to dome light?