GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Vehicle Care 251
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 fluid. Contaminated
fluid will decrease the life of the transfer
case and/or drive axles and should be
replaced.
Rear Axle
When to Check Lubricant
It is not necessary to regularly check the
rear axle fluid unless a leak is suspected or
an unusual noise is heard. A fluid loss could
indicate a problem. Have it inspected and
repaired. This service can be complex. See
your dealer.
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 fluid. Contaminated
fluid will decrease the life of the transfer
case and/or drive axles and should be
replaced.
Starter Switch Check
{Warning
When you are doing this inspection, the
vehicle could move suddenly. If the
vehicle moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room around the vehicle.
2. Apply both the parking brake and the regular brake.
Do not use the accelerator pedal, and be
ready to turn off the engine immediately
if it starts.
3. Try to start the engine in each gear. The vehicle should start only in P (Park) or
N (Neutral). If the vehicle starts in any
other position, contact your dealer for
service.
Automatic Transmission Shift Lock
Control Function Check
{Warning
When you are doing this inspection, the
vehicle could move suddenly. If the
vehicle moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room around the vehicle.
It should be parked on a level surface.
2. Apply the parking brake. Be ready to apply the regular brake immediately if
the vehicle begins to move.
3. With the engine off, turn the ignition on, but do not start the engine. Without
applying the regular brake, try to move
the shift lever out of P (Park) with
normal effort. If the shift lever moves
out of P (Park), contact your dealer for
service.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
252 Vehicle Care
Ignition Transmission Lock Check
While parked, and with the parking brake
set, try to turn the ignition off in each shift
lever position.
.The ignition should turn to off only when
the shift lever is in P (Park).
.The ignition key should come out only
when the ignition is off.
Contact your dealer if service is required.
Park Brake and P (Park)
Mechanism Check
{Warning
When you are doing this check, the
vehicle could begin to move. You or
others could be injured and property
could be damaged. Make sure there is
room in front of the vehicle in case it
begins to roll. Be ready to apply the
regular brake at once should the vehicle
begin to move.
Park on a fairly steep hill, with the vehicle
facing downhill. Keeping your foot on the
regular brake, set the parking brake.
.To check the parking brake's holding
ability: With the engine running and the
transmission in N (Neutral), slowly remove
foot pressure from the regular brake
pedal. Do this until the vehicle is held by
the parking brake only.
.To check the P (Park) mechanism's holding
ability: With the engine running, shift to
P (Park). Then release the parking brake
followed by the regular brake.
Contact your dealer if service is required.
Wiper Blade Replacement
Windshield wiper blades should be inspected
for wear or cracking.
Replacement blades come in different types
and are removed in different ways. For
proper windshield wiper blade length and
type, see Maintenance Replacement Parts
0 321.
Caution
Allowing the wiper arm to touch the
windshield when no wiper blade is
installed could damage the windshield.
Any damage that occurs would not be
(Continued)
Caution (Continued)
covered by the vehicle warranty. Do not
allow the wiper arm to touch the
windshield.
To replace the windshield wiper blade: 1. Pull the windshield wiper assembly away from the windshield.
2. Press the release lever in the middle ofthe wiper blade where the wiper blade
attaches.
3. Remove the wiper blade.
4. Reverse Steps 1–3 for wiper blade replacement.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Vehicle Care 257
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to
protect against an electrical system
overload.
When the current electrical load is too
heavy, the circuit breaker opens and closes,
protecting the circuit until the current load
returns to normal or the problem is fixed.
This greatly reduces the chance of circuit
overload and fire caused by electrical
problems.
Fuses and circuit breakers protect power
devices in the vehicle.
If there is a problem on the road and a fuse
needs to be replaced, the same amperage
fuse can be borrowed. Choose some feature
of the vehicle that is not needed to use and
replace it as soon as possible.
To check a fuse, look at the band inside the
fuse. If the band is broken or melted,
replace the fuse. Be sure to replace a bad
fuse with a fuse of the identical size and
rating.
Replacing a Blown Fuse
1. Turn off the vehicle.
2. Locate the fuse puller in the enginecompartment fuse block.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Vehicle Care 259
{Warning
Installation or use of fuses that do not
meet GM’s original fuse specifications is
dangerous. The fuses could fail, and result
in a fire. You or others could be injured
or killed, and the vehicle could be
damaged.
See Accessories and Modifications 0233 and
General Information 0233.
To check or replace a blown fuse, see
Electrical System Overload 0257.
Engine Compartment Fuse Block
If the vehicle has a diesel engine, see the
Duramax diesel supplement.
The engine compartment fuse block is in the
engine compartment, on the driver side of
the vehicle. See Engine Compartment
Overview 0235
Lift the cover to access the fuse block.
Caution
Spilling liquid on any electrical
component on the vehicle may damage
it. Always keep the covers on any
electrical component.
A fuse puller is available inside this fuse
block.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Vehicle Care 295
Warning (Continued)
State of California to cause cancer and
birth defects or other reproductive harm.
Wash hands after handling. For more
information go to
www.P65Warnings.ca.gov.
See the warning on the back cover.
{Warning
Batteries can hurt you. They can be
dangerous because:
.They contain acid that can burn you.
.They contain gas that can explode or
ignite.
.They contain enough electricity to
burn you.
If you do not follow these steps exactly,
some or all of these things can hurt you.
Caution
Ignoring these steps could result in costly
damage to the vehicle that would not be
covered by the vehicle warranty. Trying
(Continued)
Caution (Continued)
to start the vehicle by pushing or pulling
it will not work, and it could damage the
vehicle.
1. Discharged Battery Negative (–) Grounding Point
2. Discharged Battery Positive (+) Terminal
3. Good Battery Negative (–) Terminal
4. Good Battery Positive (+) Terminal
The discharged battery negative (–)
grounding point is to the left of the
windshield washer fluid reservoir. The discharged battery positive (+) terminal
is located in the engine compartment on the
driver side of the vehicle.
The good battery negative (–) terminal and
good battery positive (+) terminal are on
the battery of the vehicle providing the
jump start.
The discharged battery positive (+) terminal
is under a trim cover. Pull the small cover
(
1on top of it) outboard.
1. Check the other vehicle. It must have a
12-volt battery with a negative ground
system.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Vehicle Care 299
Caution
If the two-wheel-drive vehicle is towed
with all four wheels on the ground, the
drivetrain components could be damaged.
The repairs would not be covered by the
vehicle warranty.
Two-wheel-drive vehicles should not be
towed with all four wheels on the ground.
Four-Wheel-Drive Vehicles
Only dinghy tow four-wheel-drive vehicles
that have an N (Neutral) and a Four-Wheel
Drive Low (4 (
n) setting.
{Warning
Shifting a four-wheel-drive vehicle's
transfer case into N (Neutral) can cause
the vehicle to roll even if the
transmission is in P (Park). You or others
could be injured. Set the parking brake
before shifting the transfer case to
N (Neutral).
To dinghy tow: 1. Position the vehicle being towed behind the tow vehicle, facing forward and on a
level surface.
2. Securely attach the vehicle being towed to the tow vehicle.
3. Apply the parking brake and start the engine.
4. Shift the transfer case to N (Neutral). See “Shifting into N (Neutral)” under
Four-Wheel Drive 0194. Check that the
vehicle is in N (Neutral) by shifting the
transmission to R (Reverse) and then to
D (Drive). There should be no movement
of the vehicle while shifting.
5. With the engine off, leave the key in ACC/ACCESSORY to prevent the steering
column from locking.
Caution
Failure to disconnect the negative battery
cable or to have it contact the terminals
can cause damage to the vehicle.
6. Disconnect the negative battery cable at the battery and secure the nut and bolt.
Cover the negative battery post with a
non-conductive material to prevent any
contact with the negative battery
terminal.
7. Shift the transmission to P (Park).
Caution
If the steering column is locked, vehicle
damage may occur.
Move the steering wheel to make sure
the steering column is unlocked.
8. With a foot on the brake pedal, release the parking brake.
9. Keep the ignition key in the towed vehicle in ACC/ACCESSORY to prevent the
steering column from locking.
Disconnecting the Towed Vehicle
Before disconnecting the towed vehicle: 1. Park on a level surface.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
300 Vehicle Care
2. Set the parking brake, then shift thetransmission to P (Park), and move the
ignition key to OFF.
3. Connect the battery.
4. With your foot off the brake, turn the ignition on with the engine off.
5. Shift the transfer case out of N (Neutral) to Two-Wheel Drive High. See “Shifting
out of N (Neutral)” underFour-Wheel
Drive 0194. See your dealer if the
transfer case cannot be shifted out of
N (Neutral).
6. Start the engine and check that the vehicle is in Two-Wheel Drive High by
shifting the transmission to R (Reverse)
and then to D (Drive). There should be
movement of the vehicle while shifting.
7. Shift the transmission to P (Park) and turn off the ignition.
8. Disconnect the vehicle from the tow vehicle.
9. Release the parking brake.
10. Reset any lost presets. The outside temperature display will
default to 0 °C (32 °F) but will reset with
normal usage.Dolly Towing
Front Towing (Front Wheels Off the Ground)
–Two-Wheel-Drive Vehicles
Caution
If a two-wheel-drive vehicle is towed with
the rear wheels on the ground, the
transmission could be damaged. The
repairs would not be covered by the
vehicle warranty. Never tow the vehicle
with the rear wheels on the ground. Front Towing (Front Wheels Off the Ground)
–
Four-Wheel-Drive Vehicles
To dolly tow a four-wheel-drive vehicle from
the front:
1. Attach the dolly to the tow vehicle following the dolly manufacturer's
instructions.
2. Drive the front wheels onto the dolly.
3. Shift the transmission to P (Park).
4. Set the parking brake.
GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
15275607) - 2022 - CRC - 11/2/21
Service and Maintenance 311
Because of the way people use vehicles,
maintenance needs vary. There may need to
be more frequent checks and services. The
Additional Required Services - Normal are for
vehicles that:
.Carry passengers and cargo within
recommended limits on the Tire and
Loading Information label. SeeVehicle
Load Limits 0178.
.Are driven on reasonable road surfaces
within legal driving limits.
.Use the recommended fuel. See
Recommended Fuel 0212.
Refer to the information in the Maintenance
Schedule Additional Required Services -
Normal chart.
The Additional Required Services - Severe are
for vehicles that are:
.Mainly driven in heavy city traffic in hot
weather.
.Mainly driven in hilly or mountainous
terrain.
.Frequently towing a trailer.
.Used for high speed or competitive
driving.
.Used for taxi, police, or delivery service. Refer to the information in the Maintenance
Schedule Additional Required Services -
Severe chart.
{Warning
Performing maintenance work can be
dangerous and can cause serious injury.
Perform maintenance work only if the
required information, proper tools, and
equipment are available. If they are not,
see your dealer to have a trained
technician do the work. See
Doing Your
Own Service Work 0233.
Maintenance Schedule
Owner Checks and Services
Check the engine oil level. See Engine Oil
0 238.
Once a Month
.Check the tire inflation pressures,
including the spare. See Tire Pressure
0 273.
.Inspect the tires for wear. See Tire
Inspection 0277.
.Check the windshield washer fluid level.
See Washer Fluid 0247.
Engine Oil Change
When the CHANGE ENGINE OIL SOON
message displays, have the engine oil and
filter changed within the next 1 000 km
(600 mi). If driven under the best conditions,
the engine oil life system may not indicate
the need for vehicle service for up to a year.
The engine oil and filter must be changed at
least once a year and the oil life system
must be reset. Your trained dealer technician
can perform this work. If the engine oil life
system is reset accidentally, service the
vehicle within 5 000 km (3,000 mi) since the
last service. Reset the oil life system when
the oil is changed. See Engine Oil Life
System 0240.
Extended Idle Use
When the vehicle is used in a way that
requires extended idle time, one hour of use
shall be deemed the same as 33 miles. See
Driver Information Center (DIC) (Base Level)
093 or
Driver Information Center (DIC) (Uplevel)
0 96 for hourmeter.