On the morning of June 21st, my wife pulls into the driveway coming from work and I hear a knocking/clacking sound coming from the engine so I called the Cadillac shop to have a full diagnostic along with a tune up and the service agent called to tell me that the report from computer is saying that its something wrong with piston #7 and to further diagnose it they would have to remove the valve cover which would cost $600 not including any other problem that might be discovered WHICH could go upwards pf $2000 and I consented and afterwards the service tech concluded that the engine was still misfiring and that the engine was no good and I asked how much would that cost and they said $12k so I immediately contacted the dealership to inquire about the warranty and they gave me the run around so I am now seeking inclusion into this lawsuit because I feel like they intentionally sold me a lemon and deliberately avoided me when I attempted to contact them for warranty info...barely had the vehicle 7 months....