Checking Coolant - Chevrolet 2005 T-Series Owner's Manual

Notice: If you use an improper coolant mixture,
your engine could overheat and be badly damaged.
The repair cost would not be covered by your
warranty. Too much water in the mixture can freeze
and crack the engine, radiator, heater core and
other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
Notice: If you use the proper coolant, you do not
have to add extra inhibitors or additives which claim
to improve the system. These can be harmful.

Checking Coolant

The coolant surge tank
pressure cap can be
accessed without tilting the
cab. It is located behind
the cab on the driver's side
of the vehicle.
CAUTION:
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Turning the surge tank pressure cap when the
engine and radiator are hot can allow steam
and scalding liquids to blow out and burn you
badly. Never turn the surge tank pressure
cap — even a little — when the engine and
radiator are hot.
The vehicle must be on a level surface. When your
engine is cold, the coolant level should be at the COLD
FILL mark or higher.
See Low Coolant Warning Light on page 3-31 for further
information.
If the low coolant light
comes on in the instrument
panel cluster and stays
on, it means you are
low on engine coolant.
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