How to Add Coolant to the Radiator- Page 243

1999 Buick Park Avenue User Manual

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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 until it first
stops. (Don’t 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.

2. Then keep turning the pressure cap, but now push

down as you turn it. Remove the pressure cap.

Detailed Information for 1999 Buick Park Avenue User Manual

Lists of information found in 1999 Buick Park Avenue User Manual - Page 243

  • 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.

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