2021 GMC CANYON traction control

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Driving and Operating 179
For Slippery Road Driving:
.Accelerate gently. Accelerating too quickly
causes the wheels to spin and makes the
surface under the tires slick.
.Turn on Traction Control. SeeTraction
Control/Electronic Stability Control 0204.
.The Antilock Brake System (ABS) improves
vehicle stability during hard stops, but
the brakes should be applied sooner than
when on dry pavement. See Antilock
Brake System (ABS) 0202.
.Allow greater following distance and
watch for slippery spots. Icy patches can
occur on otherwise clear roads in shaded
areas. The surface of a curve or an
overpass can remain icy when the
surrounding roads are clear. Avoid sudden
steering maneuvers and braking while
on ice.
.Turn off cruise control.
Blizzard Conditions
Stop the vehicle in a safe place and signal
for help. Stay with the vehicle unless there
is help nearby. If possible, use Roadside
Assistance. See Roadside Assistance Program
0 330. To get help and keep everyone in the
vehicle safe:
.Turn on the hazard warning flashers.
.Tie a red cloth to an outside mirror.
{Warning
Snow can trap engine exhaust under the
vehicle. This may cause exhaust gases to
get inside. Engine exhaust contains
carbon monoxide (CO), which cannot be
seen or smelled. It can cause
unconsciousness and even death.
If the vehicle is stuck in snow:
.Clear snow from the base of the
vehicle, especially any blocking the
exhaust pipe.
.Open a window about 5 cm (2 in) on
the vehicle side that is away from the
wind, to bring in fresh air.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to
circulate the air inside the vehicle and
set the fan speed to the highest
setting. See “Climate Control Systems.”
For more information about CO, see
Engine Exhaust 0192. To save fuel, run the engine for short
periods to warm the vehicle and then shut
the engine off and partially close the
window. Moving about to keep warm also
helps.
If it takes time for help to arrive, when
running the engine, push the accelerator
pedal slightly so the engine runs faster than
the idle speed. This keeps the battery
charged to restart the vehicle and to signal
for help with the headlamps. Do this as
little as possible, to save fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin the wheels to
free the vehicle when stuck in sand, mud,
ice, or snow. See
“Rocking the Vehicle to Get
It Out” later in this section.
The Traction Control System (TCS) can often
help to free a stuck vehicle. See Traction
Control/Electronic Stability Control 0204.
If TCS cannot free the vehicle, see “Rocking
the Vehicle to Get it Out” following.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
196 Driving and Operating
6-Speed Automatic TransmissionGear before shifting from D (Drive) to
L (Manual Mode) 6th 5th 4th 3rd 2nd 1st
Range after shifting from D (Drive) to
L (Manual Mode) L4 L4 L3 L2 L2 L1
8-Speed Automatic Transmission Gear before shifting
from D (Drive) to
L (Manual Mode) 8th 7th 6th 5th 4th 3rd 2nd 1st
Range after shifting
from D (Drive) to
L (Manual Mode) –
Tow/Haul not engaged L6 L6 L5 L4 L3 L3 L2 L1
Range after shifting
from D (Drive) to
L (Manual Mode) –
Tow/Haul engaged L6 L5 L4 L3 L3 L3 L2 L1
Grade Braking is not available when Range
Selection Mode is active. See Tow/Haul
Mode 0196. While using Range Selection Mode, cruise
control and the Tow/Haul Mode can
be used.Caution
Spinning the tires or holding the vehicle
in one place on a hill using only the
accelerator pedal may damage the
transmission. The repair will not be
covered by the vehicle warranty. If the
vehicle is stuck, do not spin the tires.
When stopping on a hill, use the brakes
to hold the vehicle in place.
Low Traction Mode
If equipped, Low Traction Mode assists in
vehicle acceleration when road conditions
are slippery, such as with ice or snow. While
the vehicle is at a stop, select L2 using
Range Selection Mode. This will limit torque
to the wheels and help to prevent the tires
from spinning.
Tow/Haul Mode
If equipped, Tow/Haul Mode adjusts the
transmission shift pattern to reduce shift
cycling. While towing heavy loads, this
mode provides increased performance and
vehicle control.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Driving and Operating 197
Turn the Tow/Haul Mode on and off by
pressing the button on the center stack.
When the Tow/Haul Mode is enabled, a
light on the instrument cluster will come on.
SeeTow/Haul Mode Light 090 and
Hill and Mountain Roads 0178.
Also see “Tow/Haul Mode” underTowing
Equipment 0224.
If the vehicle has a diesel engine, the Tow/
Haul button activates the exhaust brake
system simultaneously. See “Exhaust Brake”
in the Duramax diesel supplement.
Drive Systems
Four-Wheel Drive
If equipped, four-wheel drive engages the
front axle for extra traction.
Caution
Do not drive on clean, dry pavement in 4
m, or 4nfor an extended period of time.
These conditions may cause:
.Overheating.
.Oil leakage.
.Damage to internal and external
components of the front axle.
.Premature wear on the vehicle’s
powertrain.
Driving on clean, dry pavement in 4
mor 4
nmay:
.Cause a vibration to be felt in the
steering system.
.Cause tires to wear faster.
.Cause additional driveline noise.
{Warning
If equipped with four-wheel drive, the
vehicle will be free to roll if the transfer
case is in N (Neutral), even when the shift
lever is in P (Park). You or someone else
could be seriously injured. Be sure the
transfer case is in a drive gear —2
m, 4m,
(Continued)
Warning (Continued)
or 4n— or set the parking brake before
placing the transfer case in N (Neutral).
See Shifting Into Park 0190.
Caution
Extended high-speed operation in 4n
may damage or shorten the life of the
drivetrain.
Engagement noise and bump when shifting
between 4
nand 4mor from N (Neutral),
with the engine running, is normal.
Shifting into 4
nwill turn Traction Control
and StabiliTrak/Electronic Stability Control
(ESC) off. See Traction Control/Electronic
Stability Control 0204.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
198 Driving and Operating
Electronic Transfer Case
Use the transfer case knob, next to the
steering wheel, to shift into and out of
four-wheel drive for extra traction.
All of the lights will flash on then off
momentarily when the ignition is turned on.
The light that remains on will indicate the
state of the transfer case.
If the indicator mark on the knob does not
match up with the light then that likely
means the knob was moved when the
ignition was off.
The indicator mark on the knob must line
up with the indicator light before a shift can
be commanded. To command a shift rotate
the transfer case knob to the new desiredposition. The light will flash meaning that
the shift is in progress. When the shift is
completed the new position will be
illuminated. If the transfer case cannot
complete a shift command, it will go back to
its last chosen setting.
In extreme cold weather, it may be
necessary to slow or stop the vehicle to
shift from 2
mto 4m.
Delayed shift from 4
mto 2mmay be
experienced due to uneven tire wear, low
tire pressure, high vehicle loading, or cold
temperatures.
Caution
Shifting the transmission into gear before
the requested mode indicator light has
stopped flashing could damage the
transfer case.
The settings are:
N (Neutral) : Use only when the vehicle
needs to be towed. See Recreational Vehicle
Towing 0297 or
Towing the Vehicle 0296. 2
m(Two-Wheel Drive High) :
Use for driving
on most streets and highways. The front
axle is not engaged. This setting provides
the best fuel economy.
4
n(Four-Wheel Drive Low) : This setting
engages the front axle and delivers extra
torque. Choose 4
nif driving off-road in deep
sand, deep mud, or deep snow, and while
climbing or descending steep hills. When
engaged, keep vehicle speed below 72 km/h
(45 mph).
Shifting into 4
nwill turn Traction Control
and StabiliTrak/ESC off. See Traction Control/
Electronic Stability Control 0204.
4
m(Four-Wheel Drive High) : Use when
extra traction is needed. The front axle
engages and helps when driving on snowy
or icy roads, and when off-roading. The
vehicle can be shifted from 2
mto 4mwhile
the vehicle is moving.
Shifting Into 4
m
Turn the knob to 4mat any speed up to
121 km/h (75 mph), except from 4
n. The
indicator light will flash while shifting and
will remain on the selected setting.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Driving and Operating 201
4n(Four-Wheel Drive Low) :This setting
engages the front axle and delivers extra
torque. Choose 4
nwhen driving off-road in
deep sand, deep mud, or deep snow, and
while climbing or descending steep hills.
Shifting into 4
nwill turn Traction Control
and StabiliTrak/ESC off. See Traction Control/
Electronic Stability Control 0204.
Shifting Into 4
mor AUTO
Turn the knob to the 4
mor AUTO position
at any speed, except from 4
n. The indicator
light will flash while shifting and will remain
on when the shift is completed.
Shifting Into 2
m
Turn the knob to 2mat any speed, except
when shifting from 4
n. The indicator light
will flash while shifting and will remain on
when the shift is completed. Shifting Into 4
n
When 4nis engaged, keep vehicle speed
below 72 km/h (45 mph).
To shift into 4
n:
1. The ignition must be on and the vehicle must be stopped or moving less than
5 km/h (3 mph) with the transmission in
N (Neutral). It is best for the vehicle to
be moving 1.6 to 3.2 km/h (1 to 2 mph).
2. Turn the knob to 4
n. Wait for the 4n
indicator light to stop flashing before
shifting the transmission into gear.
Caution
Shifting the transmission into gear before
the requested mode indicator light has
stopped flashing could damage the
transfer case.
If the transmission is in gear and/or moving
more than 5 km/h (3 mph), the 4
nindicator
light will flash for 30 seconds, but will not
complete the shift. After 30 seconds the
transfer case will shift to 4
m. Turn the knob
to 4
mto display the indicator. With the vehicle moving less than 5 km/h (3 mph),
and the transmission in N (Neutral), attempt
the shift again.
Shifting Out of 4
n
To shift:
1. The vehicle must be stopped or moving less than 5 km/h (3 mph) with the
transmission in N (Neutral) and the
ignition on. It is best for the vehicle to
be moving 1.6 to 3.2 km/h (1 to 2 mph).
2. Turn the knob to 4
m, AUTO, or 2m. Wait
for the 4
m, AUTO, or 2mindicator light
to stop flashing before shifting the
transmission into gear.
Caution
Shifting the transmission into gear before
the requested mode indicator light has
stopped flashing could damage the
transfer case.
If the transmission is in gear and/or moving
more than 5 km/h (3 mph), the 4
m, AUTO,
or 2
mindicator light will flash for
30 seconds but will not complete the shift.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
204 Driving and Operating
pedal release to accelerator pedal apply. The
brakes release when the accelerator pedal is
applied or automatically release after a few
seconds. The brakes may also release under
other conditions. Do not rely on HSA to hold
the vehicle.
HSA is available when the vehicle is facing
uphill in a forward gear, or when facing
downhill in R (Reverse). The vehicle must
come to a complete stop on a grade for HSA
to activate.
Ride Control Systems
Traction Control/Electronic
Stability Control
System Operation
The vehicle has a Traction Control System
(TCS) and StabiliTrak/Electronic Stability
Control (ESC) an electronic stability control
system. These systems help limit wheel slip
and assist the driver in maintaining control,
especially on slippery road conditions.
TCS activates if it senses that any of the
drive wheels are spinning or beginning to
lose traction. When this happens, TCSapplies the brakes to the spinning wheels
and reduces engine power to limit
wheel spin.
StabiliTrak/ESC activates when the vehicle
senses a difference between the intended
path and the direction the vehicle is actually
traveling. StabiliTrak/ESC selectively applies
braking pressure to any one of the vehicle
wheel brakes to assist the driver in keeping
the vehicle on the intended path.
If cruise control is being used and traction
control or StabiliTrak/ESC begins to limit
wheel spin, cruise control will disengage.
Cruise control may be turned back on when
road conditions allow.
Both systems come on automatically when
the vehicle is started and begins to move.
The systems may be heard or felt while
they are operating or while performing
diagnostic checks. This is normal and does
not mean there is a problem with the
vehicle.
It is recommended to leave both systems on
for normal driving conditions, but it may be
necessary to turn TCS off if the vehicle gets
stuck in sand, mud, ice, or snow. See
If the
Vehicle Is Stuck 0179 and “Turning the
Systems Off and On” later in this section. When the transfer case (if equipped) is in
Four-Wheel Drive Low, the stability system
is automatically disabled, and
gcomes on
in the instrument cluster. Both traction
control and StabiliTrak/ESC are automatically
disabled in this condition.
The indicator light for both systems is in the
instrument cluster. This light will:
.Flash when TCS is limiting wheel spin.
.Flash when StabiliTrak/ESC is activated.
.Turn on and stay on when either system
is not working.
If either system fails to turn on or to
activate, a message displays in the Driver
Information Center (DIC), and
dcomes on
and stays on to indicate that the system is
inactive and is not assisting the driver in
maintaining control. The vehicle is safe to
drive, but driving should be adjusted
accordingly.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Driving and Operating 205
Ifdcomes on and stays on:
1. Stop the vehicle.
2. Turn the engine off and wait 15 seconds.
3. Start the engine.
Drive the vehicle. If
dcomes on and stays
on, the vehicle may need more time to
diagnose the problem. If the condition
persists, see your dealer.
Turning the Systems Off and On
The button for TCS and StabiliTrak/ESC is on
the center stack.
Caution
Do not repeatedly brake or accelerate
heavily when TCS is off. The vehicle
driveline could be damaged.
To turn off only TCS, press and release
g.
The Traction Off light
idisplays in the
instrument cluster. To turn TCS on again, press and release
g. The Traction Off light
idisplayed in the instrument cluster will
turn off.
If TCS is limiting wheel spin when
gis
pressed, the system will not turn off until
the wheels stop spinning.
To turn off both TCS and StabiliTrak/ESC,
press and hold
guntil the Traction Off light
iand StabiliTrak/ESC Off lightgcome on
and stay on in the instrument cluster. To
turn TCS and StabiliTrak/ESC on again, press
and release
g. The Traction Off lightiand
StabiliTrak/ESC Off light
gin the instrument
cluster turn off.
StabiliTrak/ESC will automatically turn on if
the vehicle exceeds 56 km/h (35 mph). TCS
will remain off until the driver presses
gor
the ignition is cycled Off then On.
Adding accessories can affect the vehicle
performance. See Accessories and
Modifications 0234.
Hill Descent Control (HDC)
If equipped, HDC can be used when driving
downhill. It sets and maintains vehicle speed
while descending a very steep incline in a
forward or reverse gear. The HDC switch is on the center stack,
below the climate controls.
Press
5to enable or disable HDC. Vehicle
speed must be below 60 km/h (37 mph).
The HDC light displays on the instrument
cluster when enabled.
HDC can maintain vehicle speeds between
4 and 30 km/h (3 and 19 mph) on an incline
greater than or equal to a 10% grade.
A blinking HDC light indicates that the
system is actively applying the brakes to
maintain vehicle speed.
When HDC is set, that is the initial set
speed. It can be increased or decreased by
applying the accelerator or brake pedal.
Smaller HDC speed control adjustments are
accomplished using the cruise up or down
buttons. Each tap of the +RES will increase
the set speed by 0.8 km/h (0.5 mph), while
each tap of the SET– will decrease the set
speed by 0.8 km/h (0.5 mph). This adjusted
speed becomes the new set speed.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
206 Driving and Operating
HDC will remain enabled between 30 and
60 km/h (19 and 37 mph), however vehicle
speed cannot be set or maintained in this
range. It will automatically disable if the
vehicle speed is above 80 km/h (50 mph) or
above 60 km/h (37 mph) for at least
30 seconds.
5must be pressed again to
re-enable HDC.
When enabled, if the vehicle is at a speed
above 30 km/h (19 mph) and less than
60 km/h (37 mph), a DIC message will
display instructing the driver to reduce
speed for HDC operation.
Cruise control will not function while HDC is
enabled and vehicle speed is below 40 km/h
(25 mph).
Limited-Slip Differential
If equipped, the limited-slip differential can
give more traction on snow, mud, ice, sand,
or gravel. It works like a standard axle most
of the time, but when traction is low, this
feature allows the drive wheel with the
most traction to move the vehicle. For
vehicles with the limited-slip differential,
driven under severe conditions, the rear axle
fluid should be changed. See Maintenance
Schedule 0310.
Cruise Control
With cruise control a speed of about
40 km/h (25 mph) or more can be
maintained without keeping your foot on
the accelerator. Cruise control does not work
at speeds below about 40 km/h (25 mph).
{Warning
Cruise control can be dangerous where
you cannot drive safely at a steady
speed. Do not use cruise control on
winding roads or in heavy traffic.
Cruise control can be dangerous on
slippery roads. On such roads, fast
changes in tire traction can cause
excessive wheel slip, and you could lose
control. Do not use cruise control on
slippery roads.
If the cruise control is being used and the
Traction Control (TCS) system or StabiliTrak/
Electronic Stability Control (ESC) begins to
limit wheel spin, the cruise control will
automatically disengage. See Traction
Control/Electronic Stability Control 0204.
If a collision alert occurs when cruise control
is activated, cruise control is disengaged. See
Forward Collision Alert (FCA) System 0211. When road conditions allow you to safely
use it again, cruise control can be turned
back on.
If equipped with Hill Descent Control (HDC),
cruise control will disengage if HDC is Active.
If the brakes are applied, the cruise control
disengages.
5:
Press to turn the system on or off.
A white indicator comes on in the
instrument cluster when cruise control is
turned on.
+RES : If there is a set speed in memory,
press briefly to resume to that speed or
press and hold to accelerate. If cruise control
is already active, use to increase vehicle
speed.