Overheated Engine Protection Operating Mode
This emergency operating mode lets the vehicle be driven to a safe place in an emergency situation. If an overheated engine condition exists, an overheat protection mode which alternates firing groups of cylinders helps prevent engine damage.
In this mode, there is a significant loss in power and engine performance. The temperature gauge indicates an overheat condition exists. 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 on page 10‑8.
See also:
Engine Compartment Fuse Block
If the vehicle has a diesel engine, see the Duramax Diesel supplement for more information.
If the vehicle is a hybrid, see the hybrid supplement for more information.
The Engine Compartment Fuse Bl ...
If Steam is Coming from the Engine Compartment
WARNING
Steam from an overheated engine can burn you badly, even if you just open the hood. Stay away from the engine if you see or hear steam coming from it. Turn it off and get everyone away from t ...
Owner Checks and Services
At Each Fuel Stop
○ Check the engine oil level. See Engine Oil on page 10‑10.
Once a Month
○ Check the tire inflation pressures. See Tire Pressure on page 10‑51.
○ In ...