
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Climate Controls 163
Air Delivery Mode Control :PressY,\,
[, or-to change the direction of the
airflow. An indicator light comes on in the
selected mode button.
Y: Air is directed to the instrument panel
outlets.
\: Air is divided between the instrument
panel and floor outlets.
[: Air is directed to the floor outlets,
with some air directed to the windshield,
outboard instrument panel, and side window
outlets.
-: This mode clears the windows of fog or
moisture. Air is directed to the windshield,
with some air directed to the floor, outboard
instrument panel outlets, and side window
outlets.
0: Press to clear the windshield of fog or
frost more quickly. Air is directed to the
windshield and side window vents, with
some air directed to the outboard
instrument panel. The system automatically
forces outside air into the vehicle and the
air conditioning compressor will run, unless
the outside temperature is close to freezing.
Do not drive the vehicle until all the
windows are clear. See
Air Vents 0167.
@:Press to turn on recirculation. An
indicator light comes on. Air is recirculated
to quickly cool the inside of the vehicle.
It can also be used to help reduce outside
air and odors that enter the vehicle.
8: If equipped, press to turn on outside
air. An indicator light comes on. Outside air
is circulated throughout the vehicle.
A/C : Press to turn the air conditioning
system on or off. An indicator light comes
on to show that the air conditioning is
enabled. If the fan is turned off, the air
conditioner will not run. The A/C light will
stay on even if the outside temperatures are
below freezing.
Rear Window Defogger
K: If equipped, press to turn the rear
window defogger on or off. An indicator
light on the button comes on to show that
the rear window defogger is on.
The rear window defogger only works when
the ignition is on. The defogger also turns
off if the ignition is turned to off or
ACC/ACCESSORY.
Caution
Using a razor blade or sharp object to
clear the inside rear window can damage
the rear window defogger. Repairs would
not be covered by the vehicle warranty.
Do not clear the inside rear window with
sharp objects.
Heated Mirrors : If equipped with heated
outside mirrors, the mirrors heat to help
clear fog or frost from the surface of the
mirror when the rear window defog button
is pressed. See Heated Mirrors 017.
Afterblow Feature
Under certain conditions, the fan may stay
on or may turn on and off several times
after you turn off and lock the vehicle. This
is normal.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Climate Controls 165
Climate Control Status Display
The climate control status display appears
briefly when the climate controls on the
center stack are adjusted.
Automatic Operation
The system automatically heats or cools the
vehicle to the desired temperature:
.Fan Speed
.Air Delivery Mode
.Air Conditioning
.Recirculation
When AUTO is lit, all functions operate
automatically. Each function can also be
manually set. Functions not manually set
will continue to be automatically controlled. To place the system in full automatic
operation:
1. Press AUTO.
2. Set the temperature. To find your comfort setting, start with
22 °C (72 °F) and allow the system time
to stabilize. Then adjust the temperature
as needed for best comfort.
To improve fuel efficiency and to cool the
vehicle faster, recirculation may be
automatically selected in warm weather.
The recirculation light will not come on
when automatically controlled. Press
@to
manually select recirculation; press it again
to select outside air.
Do not cover the solar sensor on the top of
the instrument panel near the windshield.
This sensor regulates air temperature based
on sun load. See “Sensors”later in this
section.
Manual Operation
O: Press to turn the climate control system
on or off. When the system is turned off, air
will stop flowing into the cabin. Press
O
again or adjust any of the climate controls to turn the system back on and the airflow
will continue based on the selected climate
control settings.
A:
Turn clockwise or counterclockwise to
increase or decrease the fan speed. There is
about a five second delay when the fan is
turned on. Press the knob to turn the fan
off. Press AUTO to return to automatic
operation.
Temperature Control : Turn the knob
clockwise or counterclockwise to increase or
decrease the temperature setting. On some
models, the temperature display shows the
temperature setting increasing or
decreasing.
Air Delivery Mode Controls : Press
Y,\,
[, or-to change the direction of the
airflow. An indicator light comes on in the
selected mode button.
Changing the mode cancels the automatic
operation and the system goes into
manual mode.
Press AUTO to return to automatic
operation.
Y: Air is directed to the instrument panel
outlets.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Climate Controls 167
Afterblow Feature
Under certain conditions, the fan may stay
on or may turn on and off several times
after you turn off and lock the vehicle. This
is normal.
Air Vents
Adjustable air vents are in the center and on
the side of the instrument panel. Use the
sliding knobs on the air vents to change the
direction of the airflow. Slide the knob up or
down to open or close off the airflow.
Air vents blow warm air on the side
windows in cold weather. If Floor, Defog,
or Defrost modes are selected, a small
amount of air will come from the vents
close to the window. If the airflow is shut
off using the sliding knobs, warm air will be
directed to the other instrument panel
vents. This is normal operation.
Use the sliding knobs to turn vent airflow
on or off based on the mode selected.
Operation Tips
.Clear away any ice, snow, or leaves from
air inlets at the base of the windshield
that could block the flow of air into the
vehicle.
.Clear snow off the hood to improve
visibility and help decrease moisture
drawn into the vehicle.
.Keep the path under the front seats clear
of objects to help circulate the air inside
of the vehicle more effectively.
.Use of non-GM approved hood deflectors
can adversely affect the performance of
the system. Check with your dealer
before adding equipment to the outside
of the vehicle.
Maintenance
Passenger Compartment Air Filter
The passenger compartment air filter
reduces dust, pollen, and other airborne
irritants from outside air that is pulled into
the vehicle. The filter will need to be
replaced periodically. SeeMaintenance
Schedule 0311.
Using the climate control system without an
air filter installed is not recommended.
Water or other debris could enter the
system and result in leaks or noises. Always
install a new filter when removing the old
filter. For more information on filter replacement,
see your dealer.
Service
All vehicles have a label underhood that
identifies the refrigerant used in the vehicle.
The refrigerant system should only be
serviced by trained and certified technicians.
The air conditioning evaporator should never
be repaired or replaced by one from a
salvage vehicle. It should only be replaced
by a new evaporator to ensure proper and
safe operation.
During service, all refrigerants should be
reclaimed with proper equipment. Venting
refrigerants directly to the atmosphere is
harmful to the environment and may also
create unsafe conditions based on
inhalation, combustion, frostbite, or other
health-based concerns.
The air conditioning system requires periodic
maintenance. See
Maintenance Schedule
0 311.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
186 Driving and Operating
Caution
If you add electrical parts or accessories,
you could change the way the engine
operates. Any resulting damage would
not be covered by the vehicle warranty.
SeeAdd-On Electrical Equipment 0230.
Place the transmission in the proper gear.
Move the shift lever to P (Park) or
N (Neutral). The engine will not start in any
other position. To restart the engine when
the vehicle is already moving, use
N (Neutral) only.
Caution
Do not try to shift to P (Park) if the
vehicle is moving. If you do, you could
damage the transmission. Shift to P (Park)
only when the vehicle is stopped.
Starting Procedure
1. With your foot off the accelerator pedal, turn the ignition key to START. When
the engine starts, let go of the key. The
idle speed will go down as the engine
gets warm. Do not race the engine
immediately after starting it. Operate the engine and transmission gently to
allow the oil to warm up and lubricate
all moving parts.
Caution
Cranking the engine for long periods of
time, by returning the ignition to the
START position immediately after
cranking has ended, can overheat and
damage the cranking motor, and drain
the battery. Wait at least 15 seconds
between each try, to let the cranking
motor cool down.
2. If the engine does not start after five to 10 seconds, especially in very cold
weather (below −18 °C or 0 °F), it could
be flooded with too much gasoline. Try
pushing the accelerator pedal all the way
to the floor and holding it there while
holding the key in START for up to
15 seconds. Wait at least 15 seconds
between each try, to allow the cranking
motor to cool down. When the engine
starts, let go of the key and accelerator
pedal. If the vehicle starts briefly but
then stops again, do the same thing.
This clears the extra gasoline from the
engine. Do not race the engine
immediately after starting it. Operate the engine and transmission gently until
the oil warms up and lubricates all
moving parts.
Engine Heater
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
{Warning
Do not plug in the engine block heater
while the vehicle is parked in a garage or
under a carport. Property damage or
personal injury may result. Always park
the vehicle in a clear open area away
from buildings or structures.
If equipped, the engine heater can provide
easier starting and better fuel economy
during engine warm-up in cold weather
conditions at or below −18 °C (0 °F). Vehicles
with an engine heater should be plugged in
at least four hours before starting. An
internal thermostat in the plug-end of the
cord may exist, which will prevent engine
heater operation at temperatures above
−18 °C (0 °F).

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
200 Driving and Operating
ABS performs a system check when the
vehicle is first driven. A momentary motor
or clicking noise may be heard while this
test is going on, and the brake pedal may
move slightly. This is normal.
If there is a problem with ABS, this warning
light stays on. SeeAntilock Brake System
(ABS) Warning Light 089.
ABS does not change the time needed to
get a foot on the brake pedal and does not
always decrease stopping distance. If you
get too close to the vehicle ahead, there will
not be enough time to apply the brakes if
that vehicle suddenly slows or stops. Always
leave enough room ahead to stop, even
with ABS.
Using ABS
Do not pump the brakes. Just hold the brake
pedal down firmly. Hearing or feeling ABS
operate is normal.
Braking in Emergencies
ABS allows steering and braking at the same
time. In many emergencies, steering can
help even more than braking.
Parking Brake
Set the parking brake by holding the regular
brake pedal down, then pushing down the
parking brake pedal.
If the ignition is on, the brake system
warning light will come on. See Brake
System Warning Light 088.
Caution
Driving with the parking brake on can
overheat the brake system and cause
premature wear or damage to brake
system parts. Make sure that the parking
brake is fully released and the brake
warning light is off before driving.
To release the parking brake, hold the
regular brake pedal down, then push down
momentarily on the parking brake pedal
until you feel the pedal release. Slowly pull
your foot up off the parking brake pedal.
If the parking brake is not released when
you begin to drive, the brake system
warning light will flash and a chime will
sound warning you that the parking brake is
still on.
If you are towing a trailer and are parking
on a hill, see Driving Characteristics and
Towing Tips 0215.
Brake Assist
Brake Assist detects rapid brake pedal
applications due to emergency braking
situations and provides additional braking to
activate the Antilock Brake System (ABS) if
the brake pedal is not pushed hard enough

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Driving and Operating 203
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.
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 0311.
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 0201. If a
collision alert occurs when cruise control is
activated, cruise control is disengaged. See
Forward Collision Alert (FCA) System 0208.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
216 Driving and Operating
The following information has many
time-tested, important trailering tips and
safety rules. Many of these are important
for your safety and that of your passengers.
Read this section carefully before pulling a
trailer.
When towing a trailer:
.Become familiar with and follow all state
and local laws that apply to trailer
towing. These requirements vary from
state to state.
.State laws may require the use of
extended side view mirrors. Even if not
required, you should install extended side
view mirrors if your visibility is limited or
restricted while towing.
.Do not tow a trailer during the first
800 km (500 mi) of vehicle use to prevent
damage to the engine, axle, or other
parts.
.It is recommended to perform the first oil
change before heavy towing.
.During the first 800 km (500 mi) of trailer
towing, do not drive over 80 km/h
(50 mph) and do not make starts at full
throttle.
.Vehicles can tow in D (Drive). Tow/Haul
Mode is recommended for heavier trailers.
SeeTow/Haul Mode 0194. If the
transmission downshifts too often, a
lower gear may be selected using Manual
Mode. See Manual Mode 0192.
If equipped, the following driver assistance
features should be turned off when towing
a trailer:
.Adaptive Cruise Control (ACC)
.Super Cruise Control
.Lane Keep Assist (LKA)
.Park Assist
.Reverse Automatic Braking (RAB)
If equipped, the following driver assistance
features should be turned to alert or off
when towing a trailer:
.Automatic Emergency Braking (AEB)
.Intelligent Brake Assist (IBA)
.Front Pedestrian Braking (FPB)
If equipped with Lane Change Alert (LCA),
the LCA detection zones that extend back
from the side of the vehicle do not move
further back when a trailer is towed. Use
caution while changing lanes when towing a
trailer. If equipped with Rear Cross Traffic Alert
(RCTA), use caution while backing up when
towing a trailer, as the RCTA detection zones
that extend out from the back of the vehicle
do not move further back when a trailer is
towed.
{Warning
To prevent serious injury or death from
carbon monoxide (CO), when towing a
trailer:
.Do not drive with the liftgate, trunk/
hatch, or rear-most window open.
.Fully open the air outlets on or under
the instrument panel.
.Adjust the climate control system to a
setting that brings in only outside air.
See
“Climate Control Systems” in the
Index.
For more information about carbon
monoxide, see Engine Exhaust 0189.
Towing a trailer requires experience. The
combination of the vehicle and trailer is
longer and not as responsive as the vehicle
itself. Get used to the handling and braking
of the combination by driving on a level
road surface before driving on public roads.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Driving and Operating 219
5. Gradually release the brake pedal toallow the chocks to absorb the load of
the trailer.
6. Reapply the brake pedal. Then apply the parking brake and shift into P (Park).
7. Release the brake pedal.
Pulling the Trailer from the Water
To pull the trailer of the water: 1. Press and hold the brake pedals.
2. Start the engine and shift into gear.
3. Release the parking brake.
4. Let up on the brake pedal.
5. Drive slowly until the tires are clear of the chocks.
6. Stop and have someone pick up and store the chocks.
7. Slowly pull the trailer from the water.
8. Once the vehicle and trailer have been driven from the sloped part of the boat
ramp, the vehicle can be shifted from
four-wheel-drive high. Shift into the drive
mode that is appropriate for the road
conditions.Caution
If the vehicle tires begin to spin and the
vehicle begins to slide toward the water,
remove your foot from the accelerator
pedal and apply the brake pedal. Seek
help to have the vehicle towed up
the ramp.
Maintenance when Trailer Towing
The vehicle needs service more often when
used to tow trailers. See Maintenance
Schedule 0311. It is especially important to
check the automatic transmission fluid,
engine oil, axle lubricant, belts, cooling
system, and brake system before and during
each trip.
Check periodically to see that all nuts and
bolts on the trailer hitch are tight.
Engine Cooling When Trailer Towing
The cooling system may temporarily
overheat during severe operating conditions.
See Engine Overheating 0246.
Trailer Towing
If equipped with a diesel engine, see the
Duramax diesel supplement.
Caution
Towing a trailer improperly can damage
the vehicle and result in costly repairs
not covered by the vehicle warranty. To
tow a trailer correctly, follow the
directions in this section and see your
dealer for important information about
towing a trailer with the vehicle.
Trailering is different than just driving the
vehicle by itself. Trailering means changes in
handling, acceleration, braking, durability,
and fuel economy. Successful, safe trailering
takes correct equipment, and it has to be
used properly.
The following information has many
time-tested, important trailering tips and
safety rules. Many of these are important
for your safety and that of your passengers.
Read this section carefully before pulling a
trailer.