How To Add Coolant To The Radiator; L V6 Engine - Buick 2008 Allure Owner's Manual

How to Add Coolant to the Radiator

(3.8L V6 Engine)

Notice: Your engine has a specific radiator fill
procedure. Failure to follow this procedure could
cause your engine to overheat and be severely
damaged.
Turn the pressure cap slowly counterclockwise until
it first stops. Do not press down while turning the
pressure cap. If you hear a hiss, wait for that to stop.
A hiss means there is still some pressure left.
5-38
1. You can remove the
radiator pressure cap
when the cooling
system, including the
radiator pressure cap
and upper radiator
hose, is no longer hot.
2. Then keep turning the pressure cap, but now push
down as you turn it. Remove the pressure cap.
See Engine Compartment Overview on page 5-12
for more information on location.
3. Open the coolant air
bleed valve located on
the thermostat
housing, near the
upper radiator hose.