Cooling System Bleeding

WARNING: This page is about a different car, the 2003 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Some coolant manufacturers are mixing other types of glycol in their coolant formulations; propylene glycol is the most common new ingredient. Propylene glycol is not recommended for use in GM vehicles that were manufactured with GM Goodwrench Dex-Cool(R).

CAUTION: Avoid spilling coolant mixture on engine parts. Coolant may cause undue corrosion. If coolant is spilled during procedure, rinse area with clean water.

CAUTION: Do not add cold water to the cooling system with the engine at or above operating temperature. Adding cold water causes rapid cooling, resulting in possible engine damage.

Ensure the radiator drain cock is closed. Slowly fill the cooling system with a 50/50 mixture of Dex-Cool(R) coolant and deionized water. Start the engine. Install coolant pressure cap. Place the heater and A/C control in any A/C mode except Max and the temperature in the highest setting. Allow the engine to continue idling until the lower radiator-to-water pump hose is hot. Turn the engine off. Allow the engine to cool to outside temperature. Ensure the coolant level in the surge tank is at the proper level.