I have a 08 Silverado 1500 4x4 and had the engine code for the injectors, I replaced them with new ones I got on Amazon and still have the same code telling me to clean the injectors and that the fuel is burning rich. It has been having white smoke come out the tailpipe on cold cranks but then stops only shooting out a plume each time. I got a gasket replacement set to redo the engine gaskets but I’m wondering if there is something else less hassle I can do to fix my issue with the engine code still on?