Vehicle Messages; Brake System Messages; Engine Cooling System; Messages - GMC duramax diesel 2016 Supplement Manual

22 Instruments and Controls

Vehicle Messages

The Driver Information Center (DIC)
will display warning messages if a
problem is detected. Pressing the
select button or the set/reset button
for vehicles with DIC buttons, or the
trip odometer reset stem for vehicles
without DIC buttons, will
acknowledge some current warning
or service messages. Other
messages are more urgent and
cannot be cleared from the display
until the issue is corrected.
The following are some additional
messages that the diesel vehicle
can display.

Brake System Messages

EXHAUST BRAKE ON/OFF
This message displays when the
exhaust brake is on or off.

Engine Cooling System

Messages (8-Cylinder
Pickups and Vans)
COOLANT LEVEL LOW ADD
COOLANT
This message will appear on the
DIC if the engine coolant level is
low. Adding coolant to the coolant
recovery tank will clear the
message. For pickups only,
remember to check the coolant in
both sides of the reservoir. See
Engine Coolant in the owner
manual.

Engine Oil Messages

ENGINE OIL LOW ADD OIL
This message only displays when
the ignition key is turned to ON/RUN
and the oil level in the vehicle is low.
Check the oil level and correct it as
necessary. Let the vehicle cool or
warm up and cycle the ignition to be
sure this message clears.
This message clears itself after
10 seconds, until the next ignition
cycle. See Engine Oil 0 92.

Engine Power Messages

ENGINE POWER IS REDUCED
A computer monitors the operation
of the engine. If the ENGINE
POWER IS REDUCED message
comes on while driving, there will be
a reduction in performance and
acceleration. Take the vehicle in for
service.

Fuel System Messages

CHANGE FUEL FILTER
This message will appear on the
DIC for 10 seconds when a fuel filter
change is required. See Fuel Filter
Replacement 0 58.
WATER IN FUEL SERVICE
REQUIRED
This message will come on to warn
you if there is water in the diesel
fuel system. For more information
on how this message works, see
Water in Fuel 0 53.