Hey guys, I drive a cobalt SS supercharged 2007, short pulleys and cold air is only things that aren stock on it, first it started that the car wouldn't start if it was like -35 Celsius, now it's about -10, car won't even try to turn over and when it take the key out ofte ignition after it failing to turn over it beeps very loud a chime at me almost alarm like sounding and it ran great like three days ago then didn't start and beeps at me. Please leave any ideas thank you

 

Sounds to me like the batteries dying.
Does it start when you boost it.?
Cold weather like that is hard on batteries and the weakness shows up in real cold weather.