Windshield, Backglass, And Wiper Blades - Pontiac Montana SV6 2007 Owner's Manual

Foreign materials such as calcium chloride and
other salts, ice melting agents, road oil and
tar, tree sap, bird droppings, chemicals from
industrial chimneys, etc., can damage the vehicle's
finish if they remain on painted surfaces. Wash
the vehicle as soon as possible. If necessary, use
non-abrasive cleaners that are marked safe for
painted surfaces to remove foreign matter.
Exterior painted surfaces are subject to aging,
weather, and chemical fallout that can take their toll
over a period of years. To help keep the paint finish
looking new, keep the vehicle in a garage or
covered whenever possible.
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Windshield, Backglass, and Wiper
Blades
If the windshield is not clear after using the
windshield washer, or if the wiper blade chatters
when running, wax, sap or other material may
be on the blade or windshield.
Clean the outside of the windshield with a
full-strength glass cleaning liquid. The windshield
is clean if beads do not form when you rinse it
with water.
Grime from the windshield will stick to the wiper
blades and affect their performance. Clean the
blade by wiping vigorously with a cloth soaked in
full-strength windshield washer solvent. Then rinse
the blade with water.
Check the wiper blades and clean them as
necessary; replace blades that look worn.