2005 Ion coolant problems
 

Hey all,
Currently have an ion that is not pulling any coolant from the reservoir. Did a flush, about a gallon came out. Tried to fill again, less than gallon went in. Turned it on to get to temp, but the coolant light went on and the reservoir is still full. All of the hoses are hot, if that makes a difference. Running out of options, specially with my limited knowledge of Saturns. Please help?