Im tryin to change the thermostat?

im tryin to change the thermostat in my 93 olds 88 royale and there is bolts that hold it together but there is a hose by the bottom bolt and i need to no what it is before i take it offIm tryin to change the thermostat?most likely a coolant hose for the throttle bodyIm tryin to change the thermostat?What I show is just a thermostat that is held on by two bolts and nothing else, the housing has a bleeder screw on it but I don't see what you are taking about.Im tryin to change the thermostat?What I show is just a thermostat that is held on by two bolts and nothing else, the housing has a bleeder screw on it but I don't see what you are taking about