Why Is My 2000 Pontiac Grand Am Overheating?

Why Is My 2000 Pontiac Grand Am Overheating? While there are a variety of reasons your Pontiac Grand Am is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. Coolant leak (water pump, radiator, hose etc.) What is the most common cause of