Hi, we have a 2011 traverse that won't start. We replaced the starter because it was cooked. We even put a new battery but still nothing. When we turn the key over and try cranking it the engine light flashes rapidly and we hear a series of clicks. We have checked all fuses and relays and everything is fine. We tested the new starter and it works. Someone said it could be anti theft system or a problem with the ignition? help please!!