So I have a 1.8L naturally aspirated 2013 Chevy Cruze. Today out of know-where the computer trips into "limp-mode" (minimal power), the engine light plus the traction control light comes on, and the motor feels like someone threw a brick into a washing machine on spin cycle! Needless to say you can feel the shaking through the steering wheel. Plugs look good, coils aren't burnt or discolored, air filter cleaned 3 weeks ago and oiled (K&N air filter), motor oil changed 3 weeks ago also, PCV valve in rocker cover completely intact, rocker cover gasket intact. I'm stumped! I don't have anything to check error codes with right now, but any common problems like the PCV valve for me to check - before my local GM mechanic gets his grubby little sausages all over my car and charges me an arm and a leg just to spit out an error code or two would be greatly appreciated! I'm going to get a pocket tester on the intake and exhaust cam actuators right now, fingers crossed it's something that'll set me back $100 and not $1000... Also going to replace rocker cover just in-case, modern motors can be ridiculously sensitive to things us mere mortals just can't detect with our five senses. I miss the days when a can of ether and a roll of tape could get you back on the road - no troubles! Now my car needs a safe space because words do hurt Chevy Cruze's! No good bleeping piece of bleep!!!