I tried the "hold trip and turn to run" technique
and my gauges check themselves out.
What do the Letter / numbers mean on the odometer?

Also not sure of the "on / off" check procedure
How do you do it?

 

Turn your key on, off, on, off, on, off, then look at trip odometer, then go to Oreilly's and use their code tool to erase the codes when fixed.

 

Sorry to have to correct you jarhead but you got one too many off's in the process. After you turn it on for the third time the codes will appear in the odometer window and if you have none it will say DONE. If you want to erase any that you may have then just unhook the neg battery cable for a few mins.Good luck

 

as for all the little numbers and letters for the gauge check you'd probably have to ask a dealer.
i did this the other day and it was total chinese to me....

 

Yes they have a lot of DS and letters.
It also seems to have
hr 694 which looks a lot like hours.

Thanks