why does my gas gague and spedometer not wor and my dummy lights are on in my 2003 dodge durango

with your key off hold in your odo/trip button and turn the key to the ACC position. This should initiate the BCM (which is contained in the dash unit) to do a self check of the dash unit. All warning lights should illuminate, and all gauges should do a full stepped sweep from high back to low. if a gauge doesnt work you need a new BCM.

ok we did what you said it initiated full sweep and gas gague started working spedometer and all lights came on. after that gas gague stopped workin again spedometer stopped working and engine cold to hot gague and my gas light shows im empty and 3 other dummy lights are on and its been saying nobu5 or nobus on my odometer where my miles should be no mileage showing now if i start the vehicle and dont shift before all lights come on im having trouble shifting out of park if i do it before they come on no problem.

NOBUS means theirs some kind of communications fault. you may need a new dash cluster/BCM.