If you haven't already, check all your electrical connectors , we had two chase trucks go batsh/t crazy with there electrics and one needed a new body ECU after about 3 months the connector looked good but just enough corrosion inside to kill it, the salt does get into places you would never believe.
The salt flats was a blast ....... the salt was the only drawback .
Will keep an eye on everything over the next few months .