Cooling System Bleeding
WARNING: This page is about a different car, the 2003 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.
CAUTION:
When adding coolant, use GM Goodwrench Dex-Cool® coolant. If silicated coolant is added to the system, premature engine, heater core or radiator corrosion may result. In addition, the engine coolant will require change sooner at 30,000 miles or 24 months.
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.
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 the radiator drain cock is closed. Remove the surge tank cap. Fill the cooling system through the surge tank. Fill the cooling system with a 50/50 mixture of Dex-Cool® coolant and deionized water. Install the surge tank cap. Start the engine.
- Run the engine at 2000-2500 RPM until the engine reaches normal operating temperature. Allow the engine to idle for 3 minutes. Shut off the engine. Allow the engine to cool. Fill Start the engine. Top off the coolant as necessary.
- Install the surge tank cap. Cycle the engine RPM from idle to 3000 in 30 second intervals until the coolant reaches 210°F (99°C). Shut off the engine. Remove the surge tank cap. Top off the coolant as necessary.
- Rinse away any excess coolant from the engine and the engine compartment. Inspect the concentration of the engine coolant. Install the surge tank cap.