GMC 2003 C4C042, Owner'S Manual

Page: 325 / 386

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Cleaning the Outside of the
Windshield 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 vehicle 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.
High pressure vehicle washes may cause water to enter
your vehicle.