2015 Cadillac SRX Owner Manual - Page 275

10-16 Vehicle Care 3. Fill the coolant surge tank with the proper mixture to the indicated level mark. 4. With the coolant surge tank pressure cap off, start the engine and let it run until you can feel the upper radiator hose 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, add more of the proper mixture to the coolant surge tank until the level reaches the indicated level mark. 5. Replace the pressure cap tightly. 6. Verify coolant level after the engine is shut off and the coolant is cold. If necessary, repeat coolant fill procedure Steps 1-6. If the coolant still is not at the proper level when the system cools down again, see your dealer. { Caution 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. Engine Overheating The vehicle has an indicator to warn of engine overheating. There is an engine coolant temperature warning light on the vehicle's instrument cluster. See Engine Coolant Temperature Gauge on page 5-12. If the decision is made not to lift the hood when this warning appears, but instead get service help right away. See Roadside Service on page 13-5. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. 1. Remove the coolant surge tank pressure cap when the cooling system, including the coolant surge tank pressure cap and upper radiator hose, is no longer hot. Turn the pressure cap slowly counterclockwise about one-quarter of a turn. If you hear a hiss, wait for that to stop. This will allow any pressure still left to be vented out the discharge hose. 2. Keep turning the pressure cap slowly and remove it.