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GMC Acadia/Acadia Denali Owner Manual - 2011
10-18 Vehicle Care
How to Add Coolant to the
Radiator
{
WARNING
An electric engine cooling fan
under the hood can start up
even when the engine is not
running and can cause injury.
Keep hands, clothing, and tools
away from any underhood
electric fan.
{
WARNING
Steam and scalding liquids
from a hot cooling system can
blow out and burn you badly.
They are under pressure, and if
you turn the surge tank pressure
cap — even a little — they can
come out at high speed. Never
turn the cap when the cooling
system, including the surge tank
(Continued)
WARNING (Continue d)
pressure cap, is hot. Wait for the
cooling system and surge tank
pressure cap to cool if you ever
have to turn the pressure cap.
If coolant is needed, add the proper
mixture directly to the radiator, but
be sure the cooling system is cool
before this is done.
1. Detach fasteners and lift
off the panel that covers the
radiator cap.
2. Remove the radiator pressure
cap when the cooling system,
including the upper radiator
hose, is no longer hot.
Turn the pressure cap slowly
counterclockwise about one
full turn.
If a hiss is heard, wait for that
to stop. A hiss means there is
still some pressure left in the
system.
3. Keep turning the pressure cap
slowly and remove it.
4. Fill the radiator to the base of
the filler neck with the proper
DEX-COOL coolant mixture.