2012 Chevrolet Corvette Owner's Manual - Page 306

10-30 Vehicle Care mixture to the coolant surge tank until the level stabilizes at the FULL COLD mark on the coolant surge tank. 5. Replace the pressure cap. Be sure the pressure cap is hand-tight and fully seated. Check the level in the surge tank when the system has cooled down. If the coolant is not at the proper level, repeat Steps 1 through 4, then reinstall the pressure cap. If the coolant is not at the proper level when the system cools down again, see the dealer. 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. Engine Overheating The vehicle has several indicators to warn of engine overheating. There is an engine coolant temperature gauge on the instrument panel cluster. See Engine Coolant Temperature Gauge on page 5‑16. The vehicle may also display a COOLANT OVER TEMPERATURE message on the Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑39 for more information. If the decision is made not to lift the hood but to get service help right away. See Roadside Assistance Program (U.S. and Canada) on page 13‑8 or Roadside Assistance Program (Mexico) on page 13‑10. If the decision is made to lift the hood, make sure the vehicle is parked on a level surface. 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. Any time during this procedure, 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