DILEMMA: Have two running DeVilles, 2000 and a 2002, the 2002 has a blown head gasket so I scored on a 2000 and have been switching out parts from one to the other, today I pulled the fuel pump from the old one to put in to the new one because the new one has an erratic fuel gauge and I had just fixed it on the old one so I thought, hey, ill just swap'em. Everything went fine on the re-install and the gas gauge is working fine but NOW it won't start. I don't hear the fuel pump kicking on or if it is I can't hear it. It just cranks and sounds like it's not getting any fuel, obviously. Any thoughts?