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:
Up-Shift Light
The vehicle may have an up-shift
light. It indicates when to shift to
the next higher gear for best fuel
economy.
See Manual Transmission for more information.
For the CTS-V, the tracer ligh ...
Removing the Flat Tire and
Installing the Spare Tire
1. Do a safety check before
proceeding. See If a Tire
Goes Flat
2. Use the wrench to loosen all of
the wheel nuts. Do not remove
them yet.
3. Find the jacking location using
the diagra ...
Potential Issues
Some OnStar services are disabled
after five days. OnStar cannot
perform Remote Door Unlock or
Stolen Vehicle Assistance after the
vehicle has been off continuously
for five days. After five ...






