Radiator Pressure Cap - Buick 2004 Rendezvous Owner's Manual

The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the FULL
COLD mark, or a little higher. When your engine is
warm, the level should be above the FULL COLD mark
or a little higher.
Adding Coolant
If you need more coolant, add the proper DEX-COOL
coolant mixture at the coolant recovery tank.
CAUTION:
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Turning the radiator pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. With the coolant recovery tank, you will
almost never have to add coolant at the
radiator. Never turn the radiator pressure
cap — even a little — when the engine and
radiator are hot.
Add coolant mixture at the recovery tank, but be careful
not to spill it.
CAUTION:
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You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol,
and it will burn if the engine parts are hot
®
enough. Don't spill coolant on a hot engine.
Occasionally check the coolant level in the radiator. For
information on how to add coolant to the radiator,
see Cooling System on page 5-29.

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.
The radiator pressure cap is located at the front of the
engine compartment on the passenger's side of the
vehicle. See Engine Compartment Overview on
page 5-12 for more information on location.
5-25