How to replace thermatat in 1992 Buick Skylark?

First off you should remove housing on top of left side of motor where top radiotor hose is located. Thermestat is setting in the middle with spring part going in motor be sure to make sure you put back the way you found it. Also don't throw away the rubber seal around thermostat keep for new one. I just pried up the hose secure and loosend housing becareful you don't bust the hose doing so.