Radiator Pressure Cap
Notice: The radiator cap on your vehicle 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.
See Engine Compartment Overview on page 5-12 for
more information on location.
Coolant Surge Tank Pressure Cap
Notice: If the pressure cap is not tightly installed,
coolant loss and possible engine damage may
occur. Be sure the cap is properly and tightly
secured.
See Engine Compartment Overview on page 5-12 for
more information on location.
Engine Overheating
There is a hot engine warning light as well as an engine
coolant temperature gage on your vehicle’s instrument
panel cluster.
In addition, if your vehicle is equipped with a Driver
Information Center (DIC), you will find an ENGINE
OVERHEATED IDLE ENGINE, ENGINE HOT A/C
(Air Conditioning) OFF, or a ENGINE OVERHEATED
STOP ENGINE message displayed on the DIC. See
DIC Warnings and Messages on page 3-56 DIC
Warnings and Messages for more information.
If Steam Is Coming From Your Engine
{CAUTION:
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. Just turn it off and get
everyone away from the vehicle until it cools
down. Wait until there is no sign of steam or
coolant before you open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch fire. You
or others could be badly burned. Stop your
engine if it overheats, and get out of the
vehicle until the engine is cool.
Notice: If your engine catches fire because you
keep driving with no coolant, your vehicle can
be badly damaged. The costly repairs would not be
covered by your warranty.
5-27
2006 - Buick Lucerne Owner Manual
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