2011 Chevrolet Impala Owner's Manual - Page 277

Vehicle Care 3. Fill the cooling system with the proper DEX-COOL coolant mixture, up to the base of the filler neck. See "What to use" for more information about the proper coolant mixture. Rinse or wipe any spilled coolant from the engine and the compartment. 5. Install the coolant recovery tank cap and the pressure cap. After a day or two of driving, when the engine is cold, check the coolant level in the recovery tank. If it is low, refill it to the COLD FILL line. If the coolant in the recovery tank is constantly low, have a dealer service department inspect the vehicle for leaks. 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 several indicators to warn of engine overheating. There is a coolant temperature gauge and a warning light on the instrument panel that indicate an overheated engine condition. See Engine Coolant Temperature Gauge on page 5‑13 and Engine Coolant Temperature Warning Light on page 5‑23. In addition, there is an ENGINE OVERHEATED IDLE ENGINE and an ENGINE OVERHEATED STOP ENGINE message displayed on the vehicle Driver Information Center (DIC). See Engine Cooling System Messages on page 5‑32 for more information. 4. Then fill the coolant recovery tank to the COLD FILL line.