Carrier/rack problems of the 2010 Buick Enclave

I was driving on the interstate going about 70mph. All of a sudden the light on my console said traction control off, service stabilitrack. My gas would not work, the power steering off and all the power was going. I barely made it to the shoulder. It was very scary also have my two children in the car. I looked up the problem in my book and it said to turn off and wait 15 seconds then turn on. That did not work. I sat there for about 30 minutes. I looked under the hood, underneath the car to see if anything was leaking. Nothing. Finally it would turn over and start. I turned around to go home and about 5 miles from my house, it happed again out of no where. I again waited for about 20 or 30 minutes and it finally started. Now my check engine light is on. I am afraid to drive it now.