my 2000 bonneville acts like it's not getting fuel and cutting out

when the car is switched off, do you hear the electric fuel pump running when you switch it to on before starting? Grounding to the pump/relay to the pump would be a suspect....you could pull and inspect the relay and see if it is scorched or smelly~

at the corner of your fusebox...should be marked on the cover~

Going to have to suspect chassis ground, clean the connection to the battery, then we will test power to the fuel pump~