2013 ATS 2.0
Hello, two weeks ago I had two codes P0171 and p0299 and they eventually went away. Last night I was driving on the high way when suddenly check engine light, service stabilitrak, and service traction control lights all came on. Also got an alert that said engine power reduced and speed limited. It kept saying speed limited to such and such miles and hour but I was able to go over it. I got back on the highway and once I reached 40 mph it started blogging down and it said “Engine overpower”. It then slightly stalled, but I turned off the car and turned it back on and was able to drive home going about 30 mph. This morning I got back into my car and only the check engine light was on. But it sputtered and took quite a few cranks to get started. Once started only the check engine light was on, and when I would pushed the pedal it would shake the car slightly. I’ve seen one thread with a guy that had this exact same problem but no one has responded. Does anyone have any ideas on what the problem is?