Yesterday afternoon there was a check engine light & message to service the airbags. This afternoon there are check engine lights & a message that the engine power has been reduced. I had a service appointment scheduled for the airbag thing yesterday so I called about today's issue & my purchasing dealership had me call GMRoadside to have it brought in. My questions are: What does this mean? What caused it? What will it take to fix it? I bought the car in April of 2015.

 

could be many things without codes its hard to say