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GM Owner Manuals - Buick

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How to Add Coolant to the Cooling<br />

System (3.8L V6 Engine)<br />

1. You can remove the<br />

radiator pressure cap<br />

when the cooling<br />

system, including the<br />

radiator pressure cap<br />

and upper radiator<br />

hose, is no longer hot.<br />

2. Then keep turning the pressure cap, but now push<br />

down as you turn it. Remove the pressure cap.<br />

3. Open the coolant air<br />

bleed valve located<br />

on the thermostat<br />

housing, near the<br />

upper radiator hose.<br />

Turn the pressure cap slowly counterclockwise until<br />

it first stops. Do not press down while turning the<br />

pressure cap. If you hear a hiss, wait for that to stop.<br />

A hiss means there is still some pressure left.<br />

See Engine Compartment Overview on page 5-12<br />

Engine Compartment Overview for more information<br />

on location.<br />

5-28

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