GMC 2016 Yukon XL Denali Owner's Manual page 154

in N (Neutral), this message will
display until the transmission is
shifted to N (Neutral).
FOR 4WD LOW SLOW TO XXX
If a four-wheel drive shift into 4 is
requested, but the vehicle speed is
too high, this message will display
until the correct vehicle speed is
reached.
GRADE BRAKING ACTIVE
This message displays when grade
braking has been activated while
driving on downhill grades. This
message will only appear the first
time the feature is activated in an
ignition cycle. See Tow/Haul Mode
0 212, Automatic Transmission
0 207, and Cruise Control 0 221.
GRADE BRAKING OFF
This message displays when grade
braking has been disabled with the
Tow/Haul Mode button on the end of
the shift lever. See Tow/Haul Mode
0 212, Automatic Transmission
0 207, and Cruise Control 0 221.
GRADE BRAKING ON
This message displays when grade
braking has been enabled with the
Tow/Haul Mode button on the end of
the shift lever. See Tow/Haul Mode
0 212, Automatic Transmission
0 207, and Cruise Control 0 221.
SERVICE 4WD
If the vehicle has four-wheel drive,
this message may display if a
problem occurs with the
four-wheel-drive system. If this
message appears, stop as soon as
possible and turn off the vehicle.
Make sure the key is in the LOCK/
OFF position for at least
one minute, then restart the vehicle
and check for the message on the
DIC display. If the message is still
displayed or appears again when
you begin driving, the
four-wheel-drive system needs
service. See your dealer.
Instruments and Controls
SHIFT DENIED
This message displays when the
shift lever is in M (Manual Mode)
and a transmission range has been
selected that is unavailable at the
current vehicle speed.
TO EXIT 4WD LOW SHIFT TO
NEUTRAL
If a four-wheel drive shift out of 4 is
requested, and the vehicle speed is
correct, but the transmission is not
in N (Neutral), this message will
display until the transmission is
shifted to N (Neutral).
TO EXIT 4WD LOW SLOW
TO XXX
If a four-wheel drive shift out of 4 is
requested, but the vehicle speed is
too high, this message will display
until the correct vehicle speed is
reached.
TRANSMISSION HOT IDLE
ENGINE
This message displays and a chime
may sound if the transmission fluid
in the vehicle gets hot. Driving with
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