Engine Cooling System Messages

A/C OFF DUE TO HIGH ENGINE TEMP

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

COOLANT LEVEL LOW ADD COOLANT

This message will display if the coolant is low. See Engine Coolant on page 10‑17.

ENGINE OVERHEATED — IDLE ENGINE

This message displays when the engine coolant temperature is too hot. Stop and allow the vehicle to idle until it cools down.

ENGINE OVERHEATED — STOP ENGINE

This message displays and a continuous chime sounds if the engine cooling system reaches unsafe temperatures for operation. Stop and turn off the vehicle as soon as it is safe to do so to avoid severe damage. This message clears when the engine has cooled to a safe operating temperature.

HIGH COOLANT TEMPERATURE

This message displays if the coolant temperature is hot. See Engine Overheating on page 10‑20.

    See also:

    Interior
    The Yukon Hybrid has room for up to eight people in three rows of seats. Leather upholstery is standard, and the front seats are fitted with seat heaters. Optional items include a sunroof and a re ...

    Audio Output
    Only one audio source can be heard through the speakers at one time. An audio source is defined as DVD slot, CD slot, XM, FM-AM, front auxiliary jack, USB port, or rear auxiliary jack. Press the O b ...

    Lap-Shoulder Belt
    All seating positions in the vehicle have a lap-shoulder belt. If you are using a rear seating position with a detachable safety belt and the safety belt is not attached, see “Returning the Seat to ...