Radiator Pressure Cap; Engine Overheating - Buick 2003 Century Owner's Manual

Radiator Pressure Cap
Nofice: Your radiator cap is a pressure-type cap
and must be tightly installed to prevent coolant loss
and possible engine damage from overheating.
Be sure the arrows on the cap line up with the
overflow tube on the radiator filler neck.
The radiator pressure cap is located near the front of
the engine compartment on the passenger's side of the
vehicle.
See Engine Compartment Overview on page 5-12 for
more information on location.
Engine Overheating
You will find a coolant temperature gage and a hot
engine warning light on your instrument panel.
See Engine Coolant Temperature Gage on page 3-35
and Engine Coolant Temperature Warning Light on
page 3-34.
Overheated Engine Protection
Operating Mode
This emergency operating mode allows your vehicle to
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,
you will notice a significant
loss
in power and engine
performance. The low coolant light may come on
and the temperature gage will indicate an overheat
condition exists. Driving extended miles (km) and/or
towing a trailer in the overheat protection mode should
be avoided.
Ndiee:
After driving ir; the overhecited 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.
5-25