Chevrolet 4500 HD 2023 Manual page 314

If you have any questions on how to keep
your truck or chassis in good condition, see
your authorized dealer, the place many
truck owners choose to have their
maintenance work done. Your authorized
dealer can be relied upon to use proper
parts and practices.
Some of these services can be complex, so
unless you are technically qualified and have
the necessary equipment, you should let
your authorized dealer's service department
or another qualified service center do
these jobs.
The schedule includes general maintenance
which you or a qualified technician should
perform periodically.
Explanation of Vehicle Maintenance
and Log
The following is a brief explanation of
normal vehicle use.
NORMAL VEHICLE USE The maintenance
instructions contained in this section are
based on the assumption that your vehicle
will be used as designed:
To carry passengers and cargo with the
limitations indicated on the vehicle VIN
and GVW plate.
On reasonable road surfaces within legal
operating limits.
On a daily basis, as a general rule, for at
least several miles/kilometers.
Unusual operating conditions, such as
driving in dusty areas (sweeper, agricultural
or off-road vehicles), extended idling
(refrigeration vehicles), or vehicles operated
for frequent short trips, will require more
frequent vehicle maintenance.
The log groups items according to mile/
kilometer service intervals. Use the item
codes (letter and number) to find the
description of the maintenance and the time
intervals.
Follow whichever interval comes first, time
or miles/kilometers.
After the maintenance services are
performed, insert the month, day and
mileage/ kilometers in the area provided
next to the serviced item.
The services shown up to 176 000 km
(110,000 miles) are to be repeated after the
initial 176 000 km (110,000 miles) at the
same intervals.
Service and Maintenance
Severe Driving Conditions
A vehicle operated under severe conditions
(see list below) requires more frequent
maintenance.
Frequent short trips of less than
6 kilometers (4 miles) in moderate
temperatures
Frequent short trips of less than
16 kilometers (10 miles) in sub- freezing
temperatures
Frequent and extended low- speed engine
operation (door- to- door deliveries, stop-
and- go traffic, etc.)
Driving on unpaved roads with
heavy dust
Towing a trailer
Power Take Off (PTO) and Extended
Idle Use
When the vehicle is used with the PTO
equipment or used in a way that requires
extended idle time, one hour of use shall be
deemed the same as 33 miles. See Driver
Information Center (DIC) 0 64 for hourmeter.
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