How do you bleed the air out of cooling system for a 1998 GMC sonoma?

To bleed the air out of the cooling system in a 1998 GMC Sonoma, start by ensuring the engine is cool. Remove the radiator cap and fill the radiator with coolant, then start the engine and let it idle. Keep an eye on the coolant level; as the engine warms up, any trapped air will escape, and the coolant level may drop. Add more coolant as needed, and once the engine reaches operating temperature, turn the heater on to the maximum setting to help circulate coolant through the system. Finally, replace the radiator cap securely.