Cooling System Bleeding

NOTE: Dispose of used coolant in a coolant holding tank which is picked up along with used oil. Never pour used coolant down the drain. Ethylene glycol antifreeze is a very toxic chemical. Do not dispose of ethylene glycol antifreeze into the sewer system or ground water.

NOTE: Alcohol, methanol-based coolants or plain water alone should not be used in the cooling system at any time. Damage to the cooling system could result from their use. Maintain cooling system protection at -33°F (-36°C) to ensure protection against corrosion and loss of coolant from boiling. This level of protection should be maintained even if extreme temperatures are not expected. Add ethylene glycol-based coolant to the coolant reservoir when the coolant level is low or to provide added protection against freezing temperatures lower than -33°F (-36°C).

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

Ensure radiator drain cock is closed. Fill the radiator to the base of the radiator filler neck with a 50/50 mixture of Ethylene Glycol Coolant (GM P/N 1052753 USA or Canadian P/N 993089), and water. Fill the coolant reservoir up to the FULL mark on the reservoir.
Install the reservoir cap on the reservoir and align the marks on the cap and the reservoir. Install the reservoir hose to the reservoir cap, if disconnected. Run the engine until the coolant is at normal operating temperature. Both coolant hoses should feel warm. Add coolant as necessary to the radiator until the coolant reaches the radiator filler neck. Install the radiator cap.