2005 STS V6, CEL came on last week while I was driving. Stop by O'Reilly and how the codes scanned: P0430, P0306, & P0206.
Since then I have had the oil changed, new spark plugs, new ignition coil for 6, intake gasket replaced and fuel injector #6 replaced. My car is still running rough and the link is blinking off/on more. Any advice? Cadillac mechanic/tech in Dallas,TX? Should I take it in to the dealership?