What's the replacement cost for a 2000 Buick LeSabre heater core ?

Replacing the heater core in a 2000 Buick LeSabre will generally run You between $450 and $700. Labor makes up about $370 to $470 of that total. So, You can save a fair amount of money, if You are comfortable doing the service work Yourself. The heater core is used to heat the vehicle's cabin. It is connected to the radiator and coolant runs through it. When that fluid gets warm, the core delivers heat that in return goes through the vents to the passenger cabin. Driving with a failed heater core generally won't do much damage unless it is not working because of a coolant leak. In this case, the engine can overheat. Symptoms of a failing heater core include strong odor in vehicle, visible coolant leak, foggy windows, and cooling system failure.