John, if you need some help give me a shout, I had this happen 2 year's ago and it was a bad switch. Being my boat was a 2002 Bennet sent me a replacement for free since I was covered under their 5 year warranty. You can test by switching the wires to see if it will then retract, if so your switch is bad, if not you have a bad solenoid somewhere. The switch is very easy to replace, I think replacement price is around $80, or it was atleast when I had mine go. If you need some help give me a shout and I can give you a hand Fri or Sat. As far as location, the pump will likely be located near the helm or near the transom, Grady typically located them as close to the helm as possible, but not sure where on a CC, the location would be provided in your owners manual though in the wiring/hose diagrams. There should be a diagram just for hydraulics if I am correct.
Also, do you hear the pump when you hit the switch, typically if you do not, the switch is bad, if you do and nothing happens you have a bad solenoid. Your pump should not be the issue since the one tab works, and the pump works in both directions to both deploy and retract that tab, no different for the other side, just the line it moves fluid through.