Black plate (46,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 10/21/14
9-46
Driving and Operating
The stationary PTO mode will also
disengage if any of the following
conditions are detected by the
vehicle electronics:
.
Movement of the vehicle.
.
The parking brake is released.
.
The transmission is shifted from
P (Park) or N (Neutral) to
D (Drive) or R (Reverse).
.
The PTO load becomes
disengaged. (See service
manual.)
.
Cruise control is enabled.
Preset PTO Mode
Preset PTO can only be used when
the vehicle is not moving. This
mode provides both in-cab and
remote controls. The in-cab controls
are enabled as the factory preset.
The remote controls are disabled.
This factory preset configuration can
also be reprogrammed to enable the
remote controls, and disable the
in-cab PTO controls. See your
dealer for more information.
For in-cab PTO mode, the engine
speed is initially set to a stand-by
engine speed (900 rpm) by pressing
the PTO in-cab switch.
For remote PTO mode, with the
engine off, press and release the
PTO remote arm switch and within
5 seconds press and release the
PTO remote start/shutdown switch.
The engine speed is initially set to a
stand-by engine speed (900 rpm).
The stand-by engine speed can be
set to a higher speed by a service
technician.
Choose one of two factory presets
by pressing the SET
–
(speed 1) or
+RES (speed 2) switches, or PTO
remote SET switch. Speed 1 and
Speed 2 are programmable by a
service technician from base engine
idle rpm to max PTO operation
speed (3100 rpm).
.
Speed 1: Pressing the
−
/SET
position of the PTO switch
results in a preset speed of
1200 rpm.
.
Speed 2: Pressing the +/RES
position of the PTO switch
results in a preset speed of
1900 rpm.
Pressing and releasing the PTO
in-cab switch will return the engine
speed back to normal idle. The PTO
load relay is also disengaged. IN the
remote mode, pressing and
releasing the PTO remote start/
shutdown switch will disengage the
load and shut down the engine.
Maximum PTO Operating Speed: To
protect the PTO from over-speed,
the PTO system will disengage
when the engine speed exceeds
3100 rpm. The factory preset
maximum PTO operating speed is
2100 rpm. This can be
reprogrammed by a service
technician.
Variable PTO Mode
In this mode, the vehicle can be
programmed for stationary or mobile
operation.
