2010 Chevy Nox
I recently bought a 2010 equinox for the wife. All was well for a few weeks. One morning it cranks but won’t start. No check engine light previously. I was told to change the high pressure fuel pump. So I changed it. I rotated engine by hand to get cam in bottom position before installing new pump. I can hear the pumps in the tank kick on when key is turned to on position. I metered voltage at hpfp connector, and it is good. I did not bleed pressure before disconnecting fuel lines, not sure if that is an issue. I’m told mechanical pump don’t need to be primed, but is there something else I missed? I have ohmed out every fuse, ECM relay and run crank relay. Could it be the fuel pump control module in the rear or the map sensor? Any help would be very much appreciated. Considering buying a OBD2 scanner soon.