The 2001 Oldsmobile Intrigue 3.5L engine doesn't have a thermostat in the traditional sense that you'd adjust manually. The thermostat is integrated into the engine's cooling system and is
located within the engine block itself, typically near the water pump. You won't see it just by looking under the hood; it's internal. To replace it, you'll need to drain coolant, remove hoses, and possibly other components to access it.
If you're having cooling issues, don't try to adjust anything yourself. Take it to a mechanic as it is not a user-serviceable part easily accessible.
