2009 Pontiac G8 Owner's Manual - Page 223

Vehicle Service and Care If no coolant is visible in the surge tank, add coolant as follows: 1. Check the engine coolant reservoir level and, if required, top with coolant. See Engine Coolant on page 9-15 Engine Coolant. 4. If there is no coolant or the level is low, slowly fill the system through the radiator cap opening with a 50/50 mixture of clean, drinkable water and a DEX-COOL® coolant until full. Wait 30 seconds for coolant to settle and top off if the level drops. Do not spill coolant on the accessory drive belts. If a spill occurs, rinse the belt with fresh water. 5. Start the engine. 6. With the engine idling, top off the coolant through the radiator cap opening until full. Wait 30 seconds for the coolant to settle and top off, if the level drops. 2. Locate the radiator cap. 3. Cover the cap with a thick cloth and turn it slowly counterclockwise and remove. 7. Once the system is full, put the radiator cap back on by turning clockwise. 8. Turn off the ignition. 9-19 9. Check the coolant level in the reservoir and fill it until the level is at the top of the dipstick. 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. Pressure Cap 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. See Engine Compartment Overview on page 9-6 for more information on location.