Overheated Engine Protection; Operating Mode (V8 Engines Only); Cooling System - Chevrolet Silverado Classic 2007 Owner's Manual

If you still have the warning, turn off the engine
and get everyone out of the vehicle until it
cools down. Also, see "Overheated Engine
Protection Operating Mode" later in this section.
You may decide not to lift the hood but to get
service help right away.

Overheated Engine Protection

Operating Mode (V8 Engines Only)

If an overheated engine condition exists and
the REDUCED ENGINE POWER message
is displayed, an overheat protection mode which
alternates firing groups of cylinders helps
prevent engine damage. In this mode, you will
notice a loss in power and engine performance.
This operating mode allows your vehicle to
be driven to a safe place in an emergency. Driving
extended miles (km) 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 (Gasoline Engine) on page 486.
508

Cooling System

If your vehicle has the DURAMAX
®
see the DURAMAX
information.
When you decide it is safe to lift the hood, here is
what you will see:
8.1L V8 Engines
A. Coolant Surge Tank
B. Coolant Surge Tank Pressure Cap
C. Engine Cooling Fan
®
Diesel engine,
Diesel manual for more