I have an 05 GTP that started fine up until two days ago. Drove it to the store and tried to start it to leave and nothing. It doesn't click, there isn't any security warning on the display. After having it towed home I tried starting it again. It would click from the starter but that was it. I put in a new starter and now it will click occasionally when I try to start it but more often then not it is just dead. I have battery voltage down at the starter, but it drops to zero when I hold a volt meter on it when somebody tries to start it. The starter solenoid wire will flash about 1 volt for a split second when trying to crank it but then drops back to zero. The display in the dash does cycle through warnings for low fuel, abs, brake fluid low, and one or two other warnings. None of these things showed up before this no start situation. What should I be checking next?