The engine overheating message at Chevrolet Cobalt does not necessarily indicate a cooling fluid. The following causes can also be overheated: The engine has a heavy load (e.g. a mountain or a trailer) at a high ambient temperature. Stopping a car after a long drive at high speed.
- The engine is loaded with heavy load (e.g. movement into the mountain or with the trailer) at a high ambient temperature.
- Stopping a car after a long drive at a high speed.
- Prolonging of the engine at low speed.
In order to reduce the temperature of the motor, it is necessary to turn off the air-conditioner and to move on a small rotation for approximately one minute (you can add a heater).
The engine may also be overheated in the event of a failure of the oJ temperature sensor.