I have a 2012 chevy impala with 88000 miles. The air conditioner stopped working for about a week. I was gonna replace the blower motor but before I got to it after a short couple hour trip I got a message saying that the engine power is reduced, stabilitrak needs serviced and traction control needs service. The AC started working again oddly. I have some error codes here P0174, P0171, P0496 , P0442, P2272, and P0191. My gas cap was loose so I just tightened that and then I cleaned my mass air flow sensor. It might take care of a couple codes but Any suggestions on what it could be?