2014 gen 1. Shifts fine til trans hits operating temp. Then gear selector numbers start flashing intermittently. When this happens truck appears to go out of gear for a second. Then it works fine. Happens for about 10 minutes then works fine. Seems like an electronic board has a problem. Trans fluid was changed at 60K. Now at 120K. Checked fluid level. Looks good and is at the right level. Anyone see this before?