Checking Coolant; How To Add Coolant To The Coolant Surge Tank For Gasoline Engines - GMC 2014 Sierra Owner's Manual

mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Never dispose of engine coolant by
putting it in the trash, 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.
The coolant surge tank is located in
the engine compartment on the
passenger side of the vehicle. See
The vehicle must be on a level
surface when checking the coolant
level.
.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, wait until it cools down. The
coolant level should be at or above
the FULL COLD mark. If it is not,
there may be a leak in the cooling
system.
If coolant is visible but the coolant
level is not at or above the FULL
COLD mark, see How to Add
Coolant to the Coolant Surge Tank
for Gasoline Engines, following.
.
If the vehicle has a diesel engine,
see Cooling System in the
Duramax diesel supplement for the
proper coolant fill procedure.