2014 Cadillac ATS Owner Manual - Page 307

Vehicle Care 10-21 { Caution Running the engine without coolant may cause damage or a fire. Vehicle damage would not be covered by the vehicle warranty. Warning (Continued) If you keep driving when the engine is overheated, the liquids in it can catch fire. You or others could be badly burned. Stop the engine if it overheats, and get out of the vehicle until the engine is cool. 2. Turn the heater on to the highest temperature and to the highest fan speed. Open the windows as necessary. 3. When it is safe to do so, pull off the road, shift to P (Park) or N (Neutral) for an automatic transmission or Neutral for a manual transmission, and let the engine idle. If the overheat warning no longer displays, the vehicle can be driven. Continue to drive the vehicle slowly for about 10 minutes. Keep a safe vehicle distance from the vehicle in front. If the warning does not come back on, continue to drive normally and have the cooling system checked for proper fill and function. If the warning continues, pull over, stop, and park the vehicle right away. If there is no sign of steam, idle the engine for three minutes while parked. If the warning is still displayed, turn off the engine until it cools down. If Steam Is Coming from the Engine Compartment { Warning Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Just turn it off and get everyone away from the vehicle until it cools down. Wait until there is no sign of steam or coolant before you open the hood. (Continued) If No Steam Is Coming from the Engine Compartment If an engine overheat warning is displayed but no steam can be seen or heard, the problem may not be too serious. Sometimes the engine can get a little too hot when the vehicle: ... Climbs a long hill on a hot day. Stops after high-speed driving. Idles for long periods in traffic. If the overheat warning is displayed with no sign of steam: 1. Turn the air conditioning off.