GMC 2007 Envoy Denali, Owner'S Manual, Page: 418 / 562

Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure
to read the manufacturer’s instructions before
use. If you will be operating your vehicle in an area
where the temperature may fall below freezing,
use a fluid that has sufficient protection against
freezing.
Adding Washer Fluid
Open the cap with the
washer symbol on it.
Add washer fluid
until the tank is full. See
Engine Compartment
Overview on page 390
for reservoir location.
Notice:
•
When using concentrated washer fluid,
follow the manufacturer’s instructions
for adding water.
•
Do not mix water with ready-to-use washer
fluid. Water can cause the solution to
freeze and damage your washer fluid tank
and other parts of the washer system.
Also, water does not clean as well
as washer fluid.
•
Fill your washer fluid tank only
three-quarters full when it is very cold.
This allows for expansion if freezing
occurs, which could damage the tank if it
is completely full.
•
Do not use engine coolant (antifreeze) in
your windshield washer. It can damage
your washer system and paint.
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