Chevrolet Silverado 4500HD/5500HD/6500HD Owner Manual (GMNA-
Localizing-U.S.-12102101) - 2019 - crc - 10/2/18
Vehicle Care
303
Never dispose of engine coolant by
putting it in the trash, or by pouring
it on the ground or into sewers,
streams, or bodies of water. Have
the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The coolant surge tank is in the
engine compartment on the
passenger side of the vehicle. See
for location.
The coolant surge tank is divided
into two sides. The upper portion
coolant level should be at or above,
the bottom of the indicator arrows.
The coolant level must be checked
when the engine is cold and the
vehicle must be on a level surface.
The lower portion will be mostly
empty, depending on the operating
temperature.
{
Warning
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.
Adding Coolant
Caution
If coolant is changed or added,
always add enough to fill the
system completely or engine
damage may occur.
If more coolant is needed, add the
proper DEX-COOL coolant mixture
at the surge tank, but be careful not
to spill it.