GMC 2003 Savana Van Owner's Manual page 282

Adding Washer Fluid
Open the cap with the
washer symbol on it. Add
washer fluid until the
tank is full.
Notice:
e
e
When using concentrated washer fluid, follow
the manufacturer's instructions for adding
water.
Don't mix water with ready-to-use washer fluid.
Water can cause the solution to freeze and
damage your washer fluid tank and other parts
o f the washer system. Also, water doesn't
clean as well as washer fluid.
Fill your washer fluid tank only three-quarters
full when it's very cold. This allows for
expansion if freezing occurs, which could
damage the tank if it is completely full.
Don't use engine coolant (antifreeze) in your
windshield washer. It can damage your
washer system and paint.
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