Buick 2003 Rendezvous Owner's Manual page 340

The coolant level should be at or above the FULL COLD
mark. If it isn't, you may have a leak at the pressure cap
or in the radiator hoses, heater hoses, radiator, water
pump or somewhere else in the cooling
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Heater and radiator hoses, and other engine
parts, can be very hot. Don't touch them. If you
do, you can be burned.
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Do run the engine i lere is a leak. If you run
the engine, it could lose all coolant. That could
cause an engine fire, and you could be burned.
Get any leak fixed before you drive the vehicle.
I
If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fans are running.
If the engine is overheating, both fans should be
running. If they aren't, your vehicle needs service.
Nctke:
Engine damage from running your engine
without coolant isn't covered by your warranty.
See "Overheated Engine Protection Operating
Mode" in the Index for information on driving to a
safe place in an emergency.
Notice: When adding coolant, it is important that
vou use onlv DEX-COOL@ (silicate-free) coolant.
if coolant other than DEX-COOL is added to
the system, premature engine, heater core or
radiator corrosion may result. In addition, the engine
coolant will require change sooner
-
at 30,000 miles
(50 000 km) or 24 months, whichever occurs first.
Damage caused by the
use of coolant other
than DEX-COOL@ is not covered by your new vehicle
warranty.
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