
Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-13336155) - 2020 - CRC - 5/6/19
26
Driving and Operating
If equipped, this feature allows for
manual cleaning/regeneration of the
DPF when it is unable to clean
itself. It may be necessary to
perform a manual regeneration if
driving conditions
—
such as
extended slow speed, stop-and-go
traffic, extended idles, short drive
cycles, or stationary PTO operation
—
prevent DPF self-cleaning.
Manual regeneration can only be
used when the DPF has become at
least 90% full. At 100% full, it will
attempt to automatically self-clean if
proper driving conditions are met.
The DPF will clean itself if the
vehicle can be driven above
50 km/h (30 mph) for about
30 minutes.
A Driver Information Center (DIC)
message displays when manual
regeneration is possible.
Scroll through the DIC pages to find
the Exhaust Cleaning menu.
Depending on whether the vehicle
has a base or uplevel cluster, it may
be under the Settings menu.
If the vehicle cannot be stopped
when the DIC message first
indicates cleaning is available,
automatic self-cleaning may have
begun. If conditions cannot be met
for self-cleaning to complete, and
manual regeneration is selected, it
may take up to four minutes for the
system to switch to manual
regeneration. When the switch
occurs, a DIC message prompts to
start the cleaning process.
{
Warning
Do not leave the vehicle during
the regeneration.
Make sure that there are no
flammables near the muffler, DPF
and exhaust pipe which may
result in a fire.
Remember that the temperature
of exhaust gases is high enough
to burn you. You and others could
be seriously injured.
Before starting the manual
regeneration, make sure all of the
following safety conditions are met:
.
The vehicle is parked on level
ground, away from any
flammable materials.
.
The vehicle is parked outdoors,
away from any walls or
buildings.
.
The vehicle is at least 3 m (10 ft)
from any obstructions or
materials that may combust
or melt.
.
The shift lever is in P (Park).
.
The fuel tank is at least
one-eighth full.
.
All fluids are at the proper level.
.
No diagnostic trouble codes
have been set, and the
malfunction indicator lamp is
not on.
.
The engine coolant temperature
is above 71 °C (160 °F).
After making sure all of the safety
conditions have been met, press the
trip odometer reset stem or
V
on