loss of power "check engine light on

This probably is not related but we had a problem with our 2011 Suburban where the engine computer and the transmission computer stopped communicating and we had to limp to the dealer at 35 mph. They diagnosed the problem and the solution was to shut off the engine and let the computers reset themselves. When that happened everything worked find again and have had no problem since last February.
Just goes to show there is some `stuff' going on with these complex machines that we have do idea about.