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GM Owner Manuals - Buick

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If the temperature overheat gage is no longer in the<br />

overheat zone or an overheat warning no longer<br />

displays, the vehicle can be driven. Continue to drive<br />

the vehicle slow for about 10 minutes. Keep a safe<br />

vehicle distance from the car in front of you. If the<br />

warning does not come back on, continue to drive<br />

normally.<br />

If the warning continues, pull over, stop, and park the<br />

vehicle right away.<br />

If there is no sign of steam, idle the engine for three<br />

minutes while parked. If the warning is still displayed,<br />

turn off the engine until it cools down. Also, see<br />

“Overheated Engine Protection Operating Mode” next in<br />

this section.<br />

Overheated Engine Protection<br />

Operating Mode<br />

If an overheated engine condition exists and the<br />

message ENGINE OVERHEATED STOP ENGINE is<br />

displayed, an overheat protection mode which alternates<br />

firing groups of cylinders helps prevent engine damage.<br />

In this mode, you will notice a loss in power and<br />

engine performance. This operating mode allows the<br />

vehicle to be driven to a safe place in an emergency.<br />

Driving extended miles (km) and/or towing a trailer in the<br />

overheat protection mode should be avoided.<br />

Notice: After driving in the overheated engine<br />

protection operating mode, to avoid engine damage,<br />

allow the engine to cool before attempting any repair.<br />

The engine oil will be severely degraded. Repair the<br />

cause of coolant loss, change the oil and reset the oil<br />

life system. See Engine Oil on page 6-17.<br />

6-37

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