My 2003 Dodge Ram 3500 5.9L Turbo is having issues with the gauges in the dash. So far these things will happen while driving:

1. The temperature, oil pressure and voltage gauges will all cut off at once, slide to the beginning and then cut back on and ease back to their usual positions.
2. The fuel gauge will cut off and the low fuel error light will come on at the same time. They'll sit that way for a few seconds and then the light will go off and the gauge will cut back on again.
3. The RPM and MPH gauges will cut off and back on again together.
4. The check engine light will flash every so often and turn back off again.
5. Today my airbag light and emergency brake light cut on for a few seconds while I was driving and went back off again.

So far I've:
1. Replaced the alternator
2. Tried to collect error codes by flipping the ignition switch four times. I got the code P0633 which shouldn't have anything to do with the dash lights.
3. Held down the odometer reset button and turned the key to do a self check of the CAN/BUS system. It printed out the following things:
C-Code
AS 08
Ad 08
Af 08
00 00

I haven't yet found what those last sets of codes mean. Does anyone have a good idea what might be going on with it?

Thanks!

No clue what those last four are........ I can't find anything on them. Got a service manual handy? That should have some information at least.

Sounds like you have a bad connection somewhere though, maybe at the back side of the cluster itself? Next time they all quit, press in on the cluster, and see if they come back.

I don't have a manual at the moment. I tried pressing on the cluster and it didn't do any good. I guess I'm going to start looking for a ground.