Hey, all! I have an 09 Outlook XE with 231k miles. The CEL is on and it's pulling several seemingly unrelated codes. I have replaced the spark plugs and boots, intake manifold gaskets, valve cover gasket, crankshaft position sensor and had a backflow test done on the exhaust. (2 cats were replaced in September) The shop I had it at is thinking the timing chain but with all of the codes I'm wondering if it could be the ECU. According to the most recent diagnostic test the camshaft sensor is reading 0 right now also. I'm planning on starting with the camshaft sensors and then the ECU, since they are both cheaper options than the timing chain. Any other ideas?