2007 Chevy Cobalt will not run

Does it crank? If you smell fuel in the oil you could have an injector stuck open. Do not run the engine this way, get it checked out right away. If you don't work on your own car then use this link to find a good shop near you. https://repairpal.com/repair-shops Alex

After sitting up the anti theft will lock and it's caused from low cranking volts make sure the battery is fully charged and if you leave it to sit for more than 48hrs unhook your battery I had this problem it is frustrating