i just spent a half hour looking for the OBD II port on the drivers die and passenger side under dash on my 4500. couldn't see it anywhere. is it behind a panel on 4500's? i know it was easy to find on the 3500 i had but no luck tonight. thanks in advance.

ok i found it. i say this with as much embarassment as possible. i started looking for it on the drivers side near the outside edge. from the angle i was looking it was hidden by the brake controller. spotted it from the passenger side when looking over there. whew. :duh: