Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-13336155) - 2020 - CRC - 5/6/19
Driving and Operating
27
the steering wheel control for at
least one second to select Start on
the infotainment display.
Follow the instructions in the DIC
messages. Touch ACCEPT to
acknowledge that all of these safety
conditions have been met and to
activate regeneration.
If the infotainment display returns to
the previous screen, then one or
more of the necessary operating
conditions has not been met. If you
cannot determine which condition
has not been met, see
www.gmupfitter.com to contact the
GM Upfitter Integration Group for
assistance.
Continue to follow the instructions in
the DIC messages. Hold the
exhaust brake switch on the center
stack below the climate controls for
more than three seconds, and then
release it, to begin the regeneration
process.
If the EXHAUST BRAKE ON
message displays, then the switch
was released too soon. Press it
again to turn off the exhaust brake,
then try again when the DIC
message prompts.
When manual regeneration begins,
the engine speed increases, the
engine cooling fan sound increases,
and a DIC message indicates that
cleaning is in progress.
A DIC message will display when
cleaning has completed. The
message will remain as long as
cleaning is not necessary. Cleaning
could take up to 30 minutes. Upon
completion, the engine will return to
normal idle, but exhaust
components will remain hot for
several minutes. Do not move the
vehicle until the exhaust has had
time to cool. Manual regeneration
can be canceled at any time by
pressing the brake pedal or turning
the engine off. Unusual noises may
be heard if regeneration is
interrupted.
Diesel Exhaust Fluid
{
Warning
Avoid getting Diesel Exhaust
Fluid (DEF) on your skin or in
your eyes as it could cause
irritation. For more safety,
handling, and storage information,
see the Diesel Exhaust Fluid
container label.
Caution
Use only DEF that is GM
approved, or fluid containing the
API certified or ISO 22241 label.
The use of other fluids could
damage the system, requiring
costly repairs that will not be
covered by the vehicle warranty.