Chevrolet 4500 HD 2023 Manual page 306

Polishing and Waxing
Periodic polishing and waxing is
recommended to remove built-up residue
and eliminate any "weathered" appearance.
Your authorized dealer offers several
polishes and cleaners which have proven
value in maintaining original finish
appearance and durability.
Painted and chrome-plated surfaces should
be waxed once or twice a month,
or whenever water is being poorly repelled
on the surfaces. Ensure that wax is not
applied in direct sunlight, and that the
temperature of the painted surface is no
more than 40 °C (104 °F).
Always follow the instructions provided with
your wax product.
Do not use wax containing abrasive
material. Failure to observe this precaution
can lead to scratching of painted surfaces or
plastic components.
The application of wax to rubber component
surfaces can result in permanent whitening.
Wax must not be applied to the windshield.
Failure to observe this precaution can result
in irregular reflection of light, impairing
your view.
Protecting Exterior Bright Metal Parts
Bright metal parts should be cleaned
regularly to keep their luster. Washing with
water is all that is usually needed.
Use special care with aluminum trim. To
avoid damaging protective trim, never use
auto or chrome polish, steam or caustic soap
to clean aluminum. A coating of wax,
rubbed to a high polish, is recommended for
all bright metal parts.
Weatherstrip Lubrication
All weatherstrips should be periodically
lubricated (minimum of every 6 months)
with a weatherstrip lubricant. A thin film of
weatherstrip lubricant should be applied
using a clean cloth. Weatherstrip lubricant
application will lengthen weatherstrip life,
help sealing, and assist in eliminating
squeaks.
Windshield Care
Wax must not be applied to the windshield.
A layer of wax can impair your view in
rainy weather and can also lead to rough
movements of the windshield wiper.
If engine oil or grease comes into contact
Vehicle Care
with the windshield, staining or discoloration
may result. It must be immediately
cleaned away.
If not fully cleaned by the windshield
wipers, the windshield should be cleaned
using glass cleaner. If your windshield is not
clear after using the windshield washer, or if
the wiper blade chatters when running, wax
or other material may be on the blade or
windshield.
The windshield wipers on your truck can be
pulled out from the windshield to provide
easier access for cleaning.
Clean the outside of the windshield with a
non-abrasive cleaner. Your windshield is
clean if beads do not form when rinsing
with water. Clean the blade by wiping with
a cloth soaked in a solution of one-half
water and one-half methanol alcohol. Then
rinse the blade with water.
The windshield wiper arms may be swung
out, away from the glass, to provide easy
access for cleaning.
Do not hang on to the roof marker lights
while cleaning the windshield or damage
may occur (resulting in possible water
leakage).
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