Chevrolet Low Cab Forward 6.7L 2022 Owner's Manual page 256

(diesel). This can also cause corrosion of
these cores. Wash the radiator core with tap
water every 24 months.
Make sure to turn the engine off and
remove the key from the engine control
switch before cleaning cores.
The engine, exhaust pipe, and radiator will
be hot immediately after the vehicle is
driven. Be careful around these parts to
prevent burns.
Clean the engine when it is cold.
Do not clean the radiator, charge air cooler
(diesel) and their surrounding areas using
water that is supplied under high pressure.
Doing so may cause damage.
When cleaning the radiator core (1) and
charge air cooler core (2) , do not crush or
damage the fins (3). The fins are very fragile
so be careful not to bend them out of
shape. If they become deformed, their
cooling efficiency will be impaired. Before
cleaning, take steps to ensure that no water
will splash onto the surrounding electrical
components and wires. If stubborn dirt still
remains even after the radiator core and
charge air cooler core (diesel) have been
cleaned, have the vehicle inspected and
serviced.
Corrosion Protection
Your vehicle has been designed and built to
resist corrosion. Special materials and
protective finishes were used on most parts
of your vehicle when it was built to help
maintain good appearance, strength, and
reliable operation. However, some parts
which normally are not visible (such as
those under the vehicle and under the hood)
are such that surface rust will not affect
their reliability. So corrosion protection is
not needed or used on these parts.
Vehicle Care
Sheet Metal Damage
If your vehicle is damaged and requires
sheet metal repair or replacement, make
sure the body repair shop applies
anti-corrosion material to the parts repaired
or replaced so that corrosion protection is
restored. (Also see "Finish Damage" which
follows.)
Foreign Material Deposits
Calcium chloride and other salts, ice-melting
agents, road oil and tar, tree sap, bird
droppings, chemicals from industrial
chimneys and other foreign matter may
damage vehicle finishes if left on painted
surfaces. Prompt washing may not
completely remove all of these deposits.
Other cleaners may be needed. When using
chemical cleaners, be sure they are safe for
use on painted surfaces.
Finish Damage
Any stone chips, fractures or deep scratches
in the finish should be repaired promptly.
Bare metal will corrode quickly and may
develop into major repair expense. Minor
chips and scratches can be repaired with
touch up materials available from your
authorized dealer or other service outlets.
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