Coolant Surge Tank Pressure Cap
See Engine Comparfment
Overview on page
5-14
for
The coolant surge tank pressure cap must be fully
installed on the coolant surge tank.
Notice:
Your pressure cap is a pressure-type cap
and must be tightly installed to prevent coolant
loss
and possible engine damage from overheating.
See “Capacities and Specifications” for more
information.
Engine Overheating
You
will find a coolant temperature gage on your
vehicle’s instrument panel. See Engine Coolant
Temperature Gage on page
3-44.
In addition, you will
find a LOW COOLANT LEVEL, ENGINE OVERHEATED
and a REDUCED ENGINE POWER message in the
DIC on the instrument panel. See Driver
information
Center (DIC)
on
page
3-52.
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”
in
the Index.
5-30
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