Have an issue that is throwing me for a loop. My 2004.5 LLY has decided to shut off while driving at times, no start or start and then "misfire". The following codes have shown up. P0201-208, P2146, P2149. The same codes don't always show up when problem starts. The most common is P0201, P0204, P0206, P0207 and P02146 which I know are all on same FICM group. I have already checked the normal injector plugs, FICM bracket rub, ohmed out injectors etc. I cannot make issue consistently duplicate. Power and grounds at FICM test good. I'm at a loss, right now. It can run for hours with no issue and then when driving act up or after I shut off and restart it can act up. Has anyone had a similar issue? Thanks