GMC 1993 Suburban Owner's Manual page 243

PO593
The coolant level should be at or above COLD. If it isn't, you may have a
leak in the radiator hoses, heater hoses, radiator, water pump or somewhere
else
in the cooling system.
Heater and radiator hoses, and other engine parts, can be very hot.
Don't touch them. If you do, you can be burned.
Don't 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.
Engine
damage fwm
mnning
you-
engine
without
coolant
isn?
covered
by
If there seems to be no leak, check to see if the electric engine fan (if you
have one) is running. If the engine is overheating, the fan should be running.
If it isn't, your vehicle needs service.
Start the engine again to see if the regular fan runs when the engine does.
If it doesn't, your vehicle needs service. Turn off the engine.
#ow to Add
Codant
to
the
Coolant Wecowery Tank
If you haven't found a problem yet, but the coolant level isn't at
or
above
COLD, add a
50/50
mixture of
clean
water (preferably distilled) and a proper
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