2011 Chevrolet Aveo Owner's Manual - Page 223

Vehicle Care 4. With the coolant surge tank pressure cap off, start the engine and let it run until the upper radiator hose can be felt getting hot. Watch out for the engine cooling fan. By this time, the coolant level inside the coolant surge tank may be lower. If the level is lower than the Maximum mark, add more of the proper mixture to the coolant surge tank until the level reaches the mark. 5. Replace the pressure cap. Be sure the pressure cap is hand-tight and fully seated. Notice: If the pressure cap is not tightly installed, coolant loss and possible engine damage may occur. Be sure the cap is properly and tightly secured. 10-21 Engine Overheating The vehicle has an indicator to warn of the engine overheating. There is a coolant temperature gauge on the instrument panel cluster. See Engine Coolant Temperature Gauge on page 5‑11. If the decision is made not to lift the hood when this warning appears, get service help right away. See Roadside Assistance Program on page 13‑6. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. 3. Fill the coolant surge tank with the proper mixture to the Maximum mark on the coolant surge tank. Wait about 5 minutes, then check to see if the level is below the mark. If the level is below the Maximum mark, add additional coolant to bring the level up to the mark. Repeat this procedure until the level remains constant at the Maximum mark for at least five minutes.