I have a L83 and 6L80 out of a 2016 Silverado that I have swapped into a 2003 Silverado. I am struggling to get it to fire off. It cranks and fires with starting fluid, but will not run. I have VATS, DoD and starter diagnostics disabled. I feel like I am missing something silly. Can someone help?
2016Silverado_Mod.hpt