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Message: <blockquote data-quote="sdhow" data-source="post: 23038" data-attributes="member: 8099">I'm getting an intermittent P0304 DTC at idle that goes away upon acceleration. New coils, plugs, timing chains, sprockets, phasers, complete top end, VVT solenoids and sensors, etc.I can erase the code and it will run fine for awhile, but then returns after a longer drive and drop back to idle. Shut it down and restart and the CEL/Stabilitrak service goes off. Could this be a faulty ignition coil driver or an ECM programming issue? It runs perfectly between the intermittent episodes, which leads me to believe it's not the GDI injectors.  I really don't want to mess with the DI high pressure injector rails if that's not it.</blockquote>