How do you bleed air from the cooling system of a 2004 Nissan Titan?

To bleed air from the cooling system of a 2004 Nissan Titan, first ensure the engine is cool and remove the radiator cap. Start the engine and let it idle, allowing the thermostat to open; this will facilitate the flow of coolant. As the engine runs, monitor the coolant level and add coolant as necessary to keep it full, while occasionally squeezing the upper radiator hose to help release trapped air. Once the engine reaches operating temperature and the air bubbles cease, securely replace the radiator cap.