Overheated Engine Protection Operating; Cooling System - Chevrolet 2005 Silverado 1500 Pickup Owner's Manual

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 5-20.
5-40

Cooling System

When you decide it is safe to lift the hood, here is what
you will see:
8100 V8 Engines
A. Coolant Surge Tank
B. Coolant Surge Tank Pressure Cap
C. Engine-Driven Cooling Fan