Chevrolet Silverado 4500HD 2022 Owner's Manual page 263

PTO Operational Speed Control
Variable PTO operational speed control
provides the following functions:
Cruise Control SET (In-Cab) or Remote PTO
Set 1 Switch
SET : Press and hold the accelerator to
obtain the desired engine speed, then press
and release SET on the cruise control. The
current engine speed will be maintained.
This action can be repeated as desired to
capture a higher rpm value. The PTO set
speed cannot exceed 2900 rpm.
TAP DOWN : Press and release SET on the
cruise control to reduce the engine speed by
increments of 100 rpm. The tap down
engine speed increments can be adjusted by
the GM Service Tool. The Service Tool can
enable the option for adjustment of tap
down engine speed increments through the
Radio Customization menu.
COAST : Press and hold SET on the cruise
control to reduce the rpm at 150 rpm/sec
until the desired engine speed is reached or
until the initial PTO Standby Speed is
reached.
In-Cab Cruise Control +RES or Remote PTO
Set 2 Switch
RESUME : After a PTO set speed has been
met, a Resume Speed message is retained
after an application of the brake pedal.
Engine speed will reduce to basic idle speed.
The PTO indicator light will blink slowly
indicating the previous PTO set speed has
been retained in memory. Press and release
+RES on the cruise control to resume the
previous PTO set speed.
Driving and Operating
TAP UP : Press and release +RES on the
cruise control to increase the engine speed
by increments of 100 rpm (factory preset
value). The tap up engine speed increments
can be adjusted by the GM Service Tool. The
Service Tool can enable the option for
adjustment of tap up engine speed
increments through the Radio
Customization menu.
ACCEL : Press and hold +RES on the cruise
control to increase the rpm by 150 rpm/sec
until the desired engine speed is reached or
until the maximum allowable PTO set speed
is reached. Alternatively, the engine speed
acceleration can be adjusted through the
Radio Customization menu.
Factory Preset Parameters
The following table lists the factory preset
parameters. These may be altered by the
GM Service Tool to configure the various
PTO features.
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