Leaderboard

Of course it's intermittent. Verify the metal contacts that the relay plugs into in the electrical center. Make sure they're not loose on the relay blades. Moderate-to-good chance that swapping relays enabled actual contact with the terminals in the electrical center, but as soon as vibration gets to them, you'll lose contact again and it won't start. Yes, there could be other problems, but that seems the most likely given your statement about moving relays and suddenly it worked.

Yeah, GM refers to the anti theft as VATS, Ford calls it PATS, all of my daily drivers are Fords.... I don't have any gen2 service manuals on hand but here's a basic schematic that should apply to the Regal. If you've got no voltage at the solenoid when you attempt a start you have to use your diagnostic prowess & start back tracing the circuit to find out where the problem originates. Dead at the solenoid? go backwards to the transaxle switch, if that's dead as well move on to the crank relay, where the crank relay is concerned pull the relay & test the pins for circuit continuity, probe both sides of all the contact points (in & out) everywhere trying the key in *start*. Backprobe all of the pins with your meter to test & locate where the problem lies. To me it sounds as tho you've possibly got a short to ground when you turn the key to *start*.