Wir;
First lets go over a quick explination of the EAS Dash Messages. The EAS is in fault only if you actually see the "EAS Fault" message on the Dash. If you see only the "Slow 35mph MAX" message, this is not an EAS fault. If you see the "Slow 35mph MAX" message WITHOUT the "EAS Fault" message, this means that the EAS computer has lost power.
Let me say this again just to make sure. If you see only the "Slow 35mph MAX" message without anything else, the EAS has lost power.
I would investigate a bad ground or bad wiring harness at the EAS computer. Fuse box under the hood could also be going bad. A wet corrosive environment can cause all sorts of problems like this. Investigate the power supply. Let me know if you have any more questions.