2021 GMC CANYON air conditioning

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
316 Service and Maintenance
Footnotes—Maintenance Schedule
Additional Required Services - Severe
(1) Or every two years, whichever comes
first. More frequent passenger compartment
air filter replacement may be needed if
driving in areas with heavy traffic, poor air
quality, high dust levels, or environmental
allergens. Passenger compartment air filter
replacement may also be needed if there is
reduced airflow, window fogging, or odors.
Your GM dealer can help determine when to
replace the filter.
(2) Or every four years, whichever comes
first. If driving in dusty conditions, inspect
the filter at each oil change or more often
as needed. See Engine Air Cleaner/Filter
0 243.
(3) Visually check all fuel and vapor lines
and hoses for proper attachment,
connection, routing, and condition.
(4) Do not directly power wash the transfer
case and/or front/rear axle output seals.
High pressure water can overcome the seals
and contaminate the transfer case fluid.
Contaminated fluid will decrease the life of
the transfer case and/or axles and should be
replaced. (5)
Or every five years, whichever comes
first. See Cooling System 0245.
(6) Or every 10 years, whichever comes first.
Inspect for fraying, excessive cracking,
or damage; replace, if needed.
(7) Replace brake fluid every five years. See
Brake Fluid 0250.
(8) Or every 12 months, whichever comes
first. See Wiper Blade Replacement 0254.
(9) Or every 10 years, whichever comes first.
See Gas Strut(s) 0254.
(10) Replace air conditioning desiccant every
seven years.Special Application Services
.Severe Commercial Use Vehicles Only:
Lubricate chassis components every oil
change.
.Have underbody flushing service
performed. See "Underbody Maintenance"
in Exterior Care 0300.
Additional Maintenance
and Care
Your vehicle is an important investment and
caring for it properly may help to avoid
future costly repairs. To maintain vehicle
performance, additional maintenance
services may be required.
It is recommended that your dealer perform
these services —their trained dealer
technicians know your vehicle best. Your
dealer can also perform a thorough
assessment with a multi-point inspection to
recommend when your vehicle may need
attention.
The following list is intended to explain the
services and conditions to look for that may
indicate services are required.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
324 Technical Data
Vehicle Data
Capacities and Specifications
The following approximate capacities are given in metric and English conversions. SeeRecommended Fluids and Lubricants0319.
If the vehicle has a diesel engine, see the Duramax diesel supplement.
Application Capacities
Metric English
Air Conditioning Refrigerant For the air conditioning system refrigerant type and charge
amount, see the refrigerant label under the hood. See your dealer for more information.
Engine Cooling System*
I2.5L L4 Engine 9.1 L
9.6 qt
I3.6L V6 Engine 10.6 L
11.2 qt
Engine Oil with Filter I2.5L L4 Engine 4.7 L
5.0 qt
I3.6L V6 Engine 5.7 L
6.0 qt
Fuel Tank 79.9 L21.1 gal

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Index 347
IndexA
Accessories and Modifications . . . . . . . . . . . 234
Accessory Power . . . . . . . . . . . . . . . . . . . . . . . . . 190
Active Fuel Management . . . . . . . . . . . . . . . . . 191
Add-On Electrical Equipment . . . . . . . . . . . . . 232
Additional InformationOnStar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
Additional Maintenance and Care . . . . . . . . 316
Adjustments Lumbar, Front Seats . . . . . . . . . . . . . . . . . . . . 23
Agreements Trademarks and License . . . . . . . . . . . . . . . 156
Air Cleaner/Filter, Engine . . . . . . . . . . . . . . . . 243
Air Conditioning . . . . . . . . . . . . . . . . . . . . 164, 166
Air Filter, Passenger Compartment . . . . . . . 169
Air Vents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
How Does an Airbag Restrain? . . . . . . . . . . 38
Passenger Sensing System . . . . . . . . . . . . . . 39
What Makes an Airbag Inflate? . . . . . . . . . 37
What Will You See after an AirbagInflates? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
When Should an Airbag Inflate? . . . . . . . . 37
Where Are the Airbags? . . . . . . . . . . . . . . . . 36
Airbags Adding Equipment to the Vehicle . . . . . . . 43
Passenger Status Indicator . . . . . . . . . . . . . . 86 Airbags (cont'd)
Readiness Light . . . . . . . . . . . . . . . . . . . . . . . . . 86
Servicing Airbag-Equipped Vehicles . . . . . . 42
System Check . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Alarm Vehicle Security . . . . . . . . . . . . . . . . . . . . . . . . 14
All-Season Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 267
All-Terrain Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 267
AM-FM Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Antenna
Multi-band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
Antilock Brake System (ABS) . . . . . . . . . . . . . 202
Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Apple CarPlay and Android Auto . . . . . . . . . 146
Assistance Program, Roadside . . . . . . . . . . . . 330
Assistance Systems for Parking and Backing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 209
Audio
Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Automatic Climate Control System . . . . . . . . . . . . . . . . 166
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Headlamp System . . . . . . . . . . . . . . . . . . . . . 103
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . 243

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
348 Index
Automatic TransmissionManual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 195
Shift Lock Control Function Check . . . . . . 253
Auxiliary Jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Avoiding Untrusted Media Devices . . . . . . . . 119
Axle, Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253
B
Battery Exterior Lighting Battery Saver . . . . . . . . 108
Load Management . . . . . . . . . . . . . . . . . . . . . 107
Power Protection . . . . . . . . . . . . . . . . . . . . . . 107
Battery - North America . . . . . . . . . . . . .251, 294
Blade Replacement, Wiper . . . . . . . . . . . . . . . 254
Blind Spot Mirrors . . . . . . . . . . . . . . . . . . . . . . . . .16
Bluetooth Overview . . . . . . . . . . . . . . . . . . . . . . . . . . 141, 142
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Brake System Warning Light . . . . . . . . . . . . . . . . . . 89
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 249 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 203
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . .185 Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Bulb Replacement
Center High-Mounted Stoplamp(CHMSL) and Cargo Lamp . . . . . . . . . . . . 258
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 256
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 255
Headlamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . 256
Taillamps, Turn Signal, Sidemarker, Stoplamps, and Backup Lamps . . . . . . . 257
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 278
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
California Perchlorate Materials Requirements . . . 234
California Proposition 65 Warning . . . . . . . . . . . . . . . . . . .234, 251, 294, Back Cover
Canadian Vehicle Owners . . . . . . . . . . . . . . . . . . .2
Capacities and Specifications . . . . . . . . . . . . . 324
Carbon Monoxide
Engine Exhaust . . . . . . . . . . . . . . . . . . . . . . . . 192
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Winter Driving . . . . . . . . . . . . . . . . . . . . . . . . . 178
Caution, Danger, and Warning . . . . . . . . . . . . . .2
Center Console Storage . . . . . . . . . . . . . . . . . . . 74 Center High-Mounted Stoplamp
(CHMSL) and Cargo Lamp . . . . . . . . . . . . . . 258
Chains, Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 282
Charging Wireless . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Charging System Light . . . . . . . . . . . . . . . . . . . . 87
Check Engine Light (Malfunction Indicator) . . . . 87
Ignition Transmission Lock . . . . . . . . . . . . . 253
Child Restraints Infants and Young Children . . . . . . . . . . . . . 45
Lower Anchors and Tethers for
Children . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Older Children . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Securing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64, 69
Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Circuit Breakers . . . . . . . . . . . . . . . . . . . . . . . . . . 259
Cleaning Exterior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 300
Interior Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 304
Climate Control Systems . . . . . . . . . . . . . . . . . 164
Air Conditioning . . . . . . . . . . . . . . . . . . . . . . . 164
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Cluster, Instrument . . . . . . . . . . . . . . . . . . . . . . . .81
Collision Damage Repair . . . . . . . . . . . . . . . . . 333
Compact Spare Tire . . . . . . . . . . . . . . . . . . . . . . 292