* Upper Radiator Hose: This is almost always necessary to access the thermostat housing. You'll need a drain pan to catch coolant.
* Thermostat Housing: This houses the thermostat itself. You may need to remove bolts or clamps securing it.
* Possibly the Fan Shroud: Depending on how much space you have, you may need to remove some or all of the fan shroud to allow easier access to the thermostat housing.
* Possibly some electrical connectors: There might be sensors or wiring near the thermostat housing that needs to be disconnected.
Before you start:
* Consult a repair manual specific to your 2000 Chrysler Concorde: A Haynes or Chilton manual will give you detailed, illustrated instructions and torque specifications. This is crucial to avoid damaging your vehicle.
* Allow the engine to cool completely: Coolant is hot and under pressure. Burns are a real risk if you start working before the engine has cooled down thoroughly.
* Gather your tools: You'll need sockets, wrenches (possibly a ratchet), pliers, a drain pan, new coolant, and a new thermostat (of course!).
Remember safety first! If you're not comfortable performing this repair yourself, it's always best to take your car to a qualified mechanic.