Steam and scalding liquids from a hot cooling; system can blow out and burn you badly. They; are under pressure, and if you turn the radiator- Page 300

2006 Buick Lucerne Owner Manual

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If the overheat warning continues, there is one more
thing you can try. You can add the proper coolant
mixture directly to the radiator, but be sure the cooling
system is cool before you do it.

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CAUTION:

Steam and scalding liquids from a hot cooling
system can blow out and burn you badly. They
are under pressure, and if you turn the radiator
pressure cap — even a little — they can come
out at high speed. Never turn the cap when the
cooling system, including the radiator pressure
cap, is hot. Wait for the cooling system and
radiator pressure cap to cool if you ever have
to turn the pressure cap.

How to Add Coolant to the Radiator

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.
Turn the pressure cap slowly counterclockwise.

If you hear a hiss, wait for that to stop. A hiss means
there is still some pressure left.

2. Then keep turning the pressure cap. Remove the

pressure cap.

3. Remove the 3800 Series II V6 engine cover shield

to access the bleed valve.

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Detailed Information for 2006 Buick Lucerne Owner Manual

Lists of information found in 2006 Buick Lucerne Owner Manual - Page 300

  • 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.
  • 3. Remove the 3800 Series II V6 engine cover shield to access the bleed valve.

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