Black plate (45,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 6/5/14
Driving and Operating
9-45
PTO Disengage Conditions
To disengage the stationary or
mobile PTO operation, do one of the
following:
.
Press the brake. PTO will
disengage immediately. The
PTO indicator light will blink
slowly, indicating that the PTO
set speed is stored in memory.
Pressing the +RES switch will
restore engine speed to the
stored PTO set speed. PTO can
also be programmed to
reengage at PTO standby speed
upon releasing the brake pedal.
.
Press and release the PTO
in-cab switch. The engine speed
will return to normal engine idle.
The PTO indicator light will go
off indicating the PTO load relay
has been disengaged and PTO
set speed has been cleared from
memory.
.
From the remote PTO controls,
Press and release the
emergency stop switch. PTO is
disengaged and the engine is
shut down simultaneously.
(Stationary remote PTO only)
.
From the remote PTO controls,
press and release the remote
engine start/shutdown switch.
PTO is disengaged and the
engine is shut down
simultaneously. (Stationary
remote PTO only)
The mobile PTO mode will also
disengage if the following conditions
are detected by the vehicle
electronics:
.
The PTO load becomes
disengaged. (See service
manual.)
.
Vehicle speed exceeds 94 km/h
(58 mph).
.
Engine speed exceeds the
maximum allowed PTO
operating speed of 3100 rpm
(factory setting 2100 rpm).
.
The PTO control system will
attempt to limit accelerator pedal
and PTO switch input as the
vehicle approaches the above
operational limits. There are
some vehicle conditions, such
as downhill acceleration, that
may cause vehicle speed and/or
engine speed limits to be
exceeded. Under these
conditions, PTO is disengaged.
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
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