Chevrolet 2006 HHR Owner's Manual page 274

When the engine is cold, the coolant level should be at
or above the COLD FILL line. If it is not, you may
have a leak at the pressure cap or in the radiator hoses,
heater hoses, radiator, water pump, or somewhere in
the cooling system.
CAUTION:
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Heater and radiator hoses, and other engine
parts, can be very hot. Do not touch them.
If you do, you can be burned.
Do not run the engine if there 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.
If there seems to be no leak, with the engine on, check
to see if the electric engine cooling fan is running.
If the engine is overheating, the fan should be running.
If it is not, your vehicle needs service.
5-26
Notice: Engine damage from running your engine
without coolant is not covered by your warranty.
Notice: Using coolant other than DEX-COOL
cause premature engine, heater core or radiator
corrosion. In addition, the engine coolant may
require changing sooner, at 30,000 miles (50 000 km)
or 24 months, whichever occurs first. Any repairs
would not be covered by your warranty. Always use
®
DEX-COOL (silicate-free) coolant in your vehicle.
How to Add Coolant to the
Cooling System
Notice: Your engine has a specific cooling system
drain and fill procedure. Failure to follow this
procedure could cause your engine to overheat and
be severely damaged. If your engine's cooling
system needs to be drained and re-filled, please see
your dealer.
If you have not found a problem yet, but the coolant
level in the coolant recovery tank is below the COLD
FILL line, add a 50/50 mixture of clean, drinkable water
®
and DEX-COOL engine coolant at the coolant
recovery tank. See Engine Coolant on page 5-20 for
more information.
®
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