Cleaning the Outside of the Windshield Backglass and Wiper Blades

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Cleaning the Outside of the
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.
Weatherstrips
Silicone grease on weatherstrips will make them 
last longer, seal better, and not stick or squeak. 
Apply silicone grease with a clean cloth at least 
every six months. During very cold, damp weather 
more frequent application may be required. See
“Recommended Fluids and Lubricants” in the Index.
Cleaning the Outside of Your Vehicle
The paint finish on your vehicle provides beauty, depth
of color, gloss retention and durability.
Washing Your Vehicle
The best way to preserve your vehicle’s finish is to keep it
clean by washing it often with lukewarm or cold water.
Don’t wash your vehicle in the direct rays of the sun.
Use a car washing soap. Don’t use strong soaps or
chemical detergents. Be sure to rinse the vehicle well,
removing all soap residue completely. You can get
GM
-
approved cleaning products from your dealer. See
“Appearance Care and Materials” in the Index. Don’t
use cleaning agents that are petroleum based, or that
contain acid or abrasives. All cleaning agents should be
flushed promptly and not allowed to dry on the surface,
or they could stain. Dry the finish with a soft, clean
chamois or an all
-
cotton towel to avoid surface
scratches and water spotting.
Before you enter an automatic car wash, if your vehicle
is equipped with the optional power sliding door, be sure
to have the switch for the power sliding door override
feature enabled. See “Power Sliding Door” in the Index.
High pressure car washes may cause water to enter 
your vehicle.