Need Help w/ Winterizing - water pump not working

You may have an air block. It happened to me once. Fill water tank about 1/3
full of water and get the pump running again. Then drain the water tank of the water. Add 2 to 3 gallons of pink stuff to water tank and start running the faucets till you see good pink coming out. Don't run the water out of the lines.
The pink will do that.
And yes, you can get a bit of pink taste from your system doing this...but
if you flush it about 3 times, it ain't bad.

Brian