Engine Cooling System Messages

ENGINE HOT A/C (AIR CONDITIONING) OFF

This message displays when the engine coolant becomes hotter than the normal operating temperature.

See Engine Coolant Temperature Gauge. To avoid added strain on a hot engine, the air conditioning compressor automatically turns off. When the coolant temperature returns to normal, the air conditioning compressor turns back on.

You can continue to drive the vehicle.

If this message continues to appear, have the system repaired by your dealer as soon as possible to avoid damage to the engine.

ENGINE OVERHEATED IDLE ENGINE

Notice: If you drive the vehicle while the engine is overheating, severe engine damage may occur. If an overheat warning appears on the instrument panel cluster and/or DIC, stop the vehicle as soon as possible.
Do not increase the engine speed above normal idling speed.
See Engine Overheating for more information.

This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down. If the message does not clear in a few minutes or if the overheat light stays on, shut the vehicle off and have it serviced before driving again.

See Engine Coolant Temperature Warning Light.

See Overheated Engine Protection Operating Mode for information on driving to a safe place in an emergency.

    See also:

    Repair Facility
    GM also recommends that you choose a collision repair facility that meets your needs before you ever need collision repairs. Your dealer may have a collision repair center with GM-trained te ...

    Wheel Alignment
    Wheel alignment is critical for ensuring that the tires deliver optimal wear and performance. - Signs that the alignment may need to be adjusted include pulling, improper vehicle handling, ...

    Automatic Entry Recall
    If entry/exit recall is programmed on in the vehicle personalization menu, automatic entry recall occurs when the ignition is turned on. See Vehicle Personalization. To stop recall movement, ...