How do you replace thermostat on Chevy Camaro?

Drain the radiator into a container. Remove the upper radiator hose at the engine end. there is 2 bolts in the housing that hold the thermostat. Remove them and the thermostat and clean both surfaces. Install the new thermostat and housing. Install the upper hose and top off the radiator with a 50/50 mixture of antifreeze and water.