Engine Belts And Pulleys problems of the 2012 Chevrolet Malibu

Stop at light, knocking noise starts & hesitation at next light. A mile later, check engine light turns on. Codes p00011,p00014 p00366- from dealership #1. Had previous engine work done under warranty (which dearlership #1 tried to charge me $400. Until I pressed the warranty). I bought it there. Service person reported:foreign debris on the screen of the cam position actuators she also reported: filter broke, or someone where I had the oil changed (valvoline) put a rag or bottle cap in my engine,needed a new one. She advise me to take the car to valvoline. After persistent questioning, she suggests, engine flush but no guarantee. Refused flush. Paid $133. For "diagnostic". Took to valvoline - they spoke to tech at dealership #1 who said filter intact but tilted. They viewed the filter, said it was fine but showed me the metallic sparkles in it. They mentioned it was tilted. They took pictures and have a video where they said a rag or bottle cap was not near engine. I have not view this tape. Called gm - made a compliant against dealer - they escalate gm calls back. Advised take to dealership. Anyone, took to another - do not trust the original. Gm dealership #2 - said filter had metal parts in it - they said it was crushed,asked to drop pain,quoted $350. Dealer #2 - drops pan and says the following in an email and sent pictures:the following pictures show the vehicles oil pan removed and foreign debris in the bottom. Technician believes the plastic from the timing chain guides and visible metal in the oil itself. Advised need engine. Rebuilt is approx: $6000, or $7500 new. Car has 33k miles. Timing chain belt failure. Gm will not stand by their products that destroyed engine. Two engine issues prior to current: stalled approaching a highway. Towed to dealership#1. Driving on highway/slowed from 50 to 20mph, trying to pull over then it accelerated.