Technical data

Black plate (13,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 10/21/14
Instruments and Controls 5-13
Engine Cooling System
Messages
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. You may need to 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 on page 10-6.
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. You should 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 on page 9-34.
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 on page 9-28.
Diesel Exhaust Fluid
Messages
For more information on these
messages, see “Exhaust Fluid Low”
or “Exhaust Fluid Quality Poor” in
Diesel Exhaust Fluid on page 9-13.
EXHAUST FLUID RANGE:
XXXX KM (MI)
When the exhaust fluid is getting
low, the range will be displayed in
either kilometers or miles. It is
normal for the EXHAUST FLUID
RANGE to vary based on vehicle
and environmental driving
conditions. When this message first