Overheated Engine Protection Operating Mode
If an overheated engine condition exists and the ENGINE POWER IS REDUCED message is displayed, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage. In this mode, a loss in power and engine performance will be noticed. This operating mode allows the vehicle to be driven to a safe place in an emergency. Driving extended distances and/or towing a trailer in the overheat protection mode should be avoided.
Notice: After driving in the overheated engine protection operating mode, to avoid engine damage, allow the engine to cool before attempting any repair. The engine oil will be severely degraded. Repair the cause of coolant loss, change the oil and reset the oil life system. See Engine Oil .
See also:
Engine Oil Messages
CHANGE ENGINE OIL SOON
This message displays when the engine oil needs to be changed. When you change
the engine oil, be sure to reset the CHANGE ENGINE OIL SOON message. See Engine
Oil Life Syst ...
Safety Belts
Refer to the following sections for important information on how to use safety
belts properly.
Safety Belts .
How to Wear Safety Belts Properly .
Lap-Shoulder Belt .
Lo ...
Add-on Electrical Equipment
The OnStar system is integrated
into the electrical architecture of the
vehicle. Do not add any electrical
equipment. See Add-On Electrical
Equipment. Added
electrical equipment may interfer ...






