Chevrolet/GMC Duramax Diesel Supplement (GMNA-Localizing-U.S./Canada-
11354421) - 2018 - CRC - 5/9/17
Driving and Operating
81
If the PTO factory preset
parameters do not match the
settings described above, then they
may have already been altered in
order to satisfy the requirements of
the installed PTO system and body
equipment.
The following PTO settings are also
offered via the vehicle customization
screens, which can be enabled by
your service technician. These
include the following parameters:
.
PTO Standby rpm
.
PTO Set 1 Speed
.
PTO Set 2 Speed
.
Tap Step Speed
.
PTO Engine Run Timer
Driver Information Center (DIC)
Warning Messages
If the PTO indicator light does not
remain on, it indicates that not all
PTO enabling conditions have been
met. One or more of the following
DIC messages may display if the
PTO will not engage and the
appropriate action must be taken.
.
PTO: SHIFT TO PARK (P)
(Stationary mode only)
.
PTO: SET PARK BRAKE
(Stationary mode only)
.
PTO: PRESS & RELEASE
BRAKE (Mobile mode only)
.
PTO: RELEASE BRAKE TO
ENGAGE PTO
.
PTO: REDUCE VEHICLE
SPEED
.
PTO: REDUCE ENGINE SPEED
.
PTO: DISENGAGE CRUISE
CONTROL
.
PTO: ACCELERATION UPON
BRAKE RELEASE
.
PTO: SERVICE PTO
.
PTO: SHIFT TO M1, M2 OR M3
(Mobile mode only)
.
Action Required Cleaning
Exhaust Filter Continue Driving
(DPF only)
.
Action Required Cleaning
Exhaust Filter Must Continue
Driving (DPF only)
.
Exhaust Filter Cleaning
Available Go to Options Menu
(DPF only)
In addition, the PTO indicator light
will light when all conditions
required to engage PTO have not
been met. When enabling PTO, the
PTO indicator light will turn on, then
turn off after one second. Under
normal operating conditions, the
PTO indicator light will remain on
throughout the PTO operating cycle.
Additional in-vehicle PTO module
information can be accessed by the
service technician to aid in
troubleshooting. Also see the
service manual for more
information.
The GM service technician can
access Service Tool information that
will contain reasons why PTO may
not engage and why PTO may
unexpectedly disengage due to
system conditions.
See www.gmupfitter.com for
information on the installation of
wiring and programming for PTO
aftermarket equipment.