Hi new to the site. I bought a 2001 101k Deville this spring with known bad head gaskets. Dropped the cradle and installed Carroll's head studs, felpro gaskets, new water pump, rebuilt alternator and starter, and new plugs and wires.
Got everything hooked back up finally and won't start. Turn key and headlights and fuel pump come on and won't shut off by key. Lights on dash come up normal and kill when trying to start to send more juice to starter. Battery charged showing 11.6v on dash computer. No clicking from starter and doesn't engage at all, doesn't turn over. Again you can hear the fuel pump turn on with the key but doesn't shut off until battery is unhooked and you can hear the regulator hissing too and lights are on. Checked fuses and the relays sound like they are working; even swapped a couple.
Currently finding stuff to do with ecu and psm. Maybe neutral saftey switch? Tried in a few different gears to see I I hooked that up wrong...
Thanks in advance!!