2021 GMC CANYON Owner's Manual

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
256 Vehicle Care
Bulb Replacement
For the proper type of replacement bulbs,
or any bulb changing procedure not listed in
this section, contact your dealer.
Caution
Do not replace incandescent bulbs with
aftermarket LED replacement bulbs. This
can cause damage to the vehicle electrical
system.
Halogen Bulbs
{Warning
Halogen bulbs have pressurized gas inside
and can burst if you drop or scratch the
bulb. You or others could be injured. Be
sure to read and follow the instructions
on the bulb package.
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps
1. Front Turn Signal/Sidemarker/Parking Lamp
2. Low-Beam Headlamp/DRL
3. High-Beam Headlamp
See your dealer for passenger side
replacement.
Headlamp
1. Open the hood.
2. Remove the headlamp bulb cover by turning it counterclockwise. 3. Turn the bulb socket counterclockwise to
remove it from the headlamp assembly
and pull it straight out.
4. Unplug the electrical connector from the old bulb by releasing the clip on the
bulb socket.
5. Replace the bulb and reverse Steps 1–4 to reinstall.
Turn Signal/Sidemarker/Parking Lamp
1. Open the hood.
2. Turn the bulb socket counterclockwise toremove it from the headlamp assembly
and pull it straight out.
3. Remove the bulb by pulling it straight out of the bulb socket.
4. Replace the bulb and reverse Steps 1–3 to reinstall.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Vehicle Care 257
Taillamps, Turn Signal,
Sidemarker, Stoplamps, and
Back-Up Lamps
1. Taillamp/Stoplamp/Turn Signal
2. Back-up Lamp
3. Taillamp/Stoplamp/Turn Signal/Sidemarker
1. Open the tailgate.
2. Remove the two rear lamp assemblyscrews.
3. Pull the rear lamp assembly outboard away from the box side until the
retainers release. There will be a noise
when the retainers release.4. Pull the rear lamp assembly straight backto remove it from the vehicle.
5. Turn the bulb socket counterclockwise.
6. Pull the bulb straight out from the socket.
7. Replace the bulb, then insert the bulb socket into the rear lamp assembly and
turn clockwise.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
258 Vehicle Care
9. Verify the retainer ring is in the properposition. If the retainer ring is out of
position, it will not engage. Reset the
retainer by pulling it forward with a tool.
10. Push the rear lamp assembly straight in until it is seated against the vehicle.
11. Make sure the rear lamp assembly is flush with the box side.
12. Reinstall the two rear lamp assembly screws.
Center High-Mounted Stoplamp
(CHMSL) and Cargo Lamp
1. Cargo Lamp Bulbs
2. Center High-Mounted Stoplamp(CHMSL) Bulb
To replace one of these bulbs:
1. Remove the two screws and lift off thelamp assembly.
2. Turn the bulb socket counterclockwise and pull it straight out.
3. Pull the bulb straight out from the socket.
4. Replace the bulb and reverse Steps 1-3 to reinstall.

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Vehicle Care 259
Electrical System
Electrical System Overload
The vehicle has fuses to protect against an
electrical system overload. Fuses also protect
power devices in the vehicle.
Replace a bad fuse with a new one of the
identical size and rating.
If there is a problem on the road and a fuse
needs to be replaced, there is a fuse puller
in the Engine Compartment Fuse Block.
Replace the fuse as soon as possible with
one of the same amperage rating.
Headlamp Wiring
An electrical overload may cause the lamps
to go on and off, or in some cases to
remain off. Have the headlamp wiring
checked right away if the lamps go on and
off or remain off.
Windshield Wipers
If the wiper motor overheats due to heavy
snow or ice, the windshield wipers will stop
until the motor cools and will then restart.
Although the circuit is protected from
electrical overload, overload due to heavy
snow or ice may cause wiper linkage
damage. Always clear ice and heavy snow
from the windshield before using the
windshield wipers.
If the overload is caused by an electrical
problem and not snow or ice, be sure to get
it fixed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are
protected from short circuits by fuses. This
greatly reduces the chance of damage
caused by electrical problems.
{Danger
Fuses and circuit breakers are marked
with their ampere rating. Do not exceed
the specified amperage rating when
replacing fuses and circuit breakers. Use
of an oversized fuse or circuit breaker can
result in a vehicle fire. You and others
could be seriously injured or killed.
{Warning
Installation or use of fuses that do not
meet GM’s original fuse specifications is
dangerous. The fuses could fail, and result(Continued)

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
260 Vehicle Care
Warning (Continued)
in a fire. You or others could be injured
or killed, and the vehicle could be
damaged.
See Accessories and Modifications 0234 and
General Information 0234.
To check a fuse, look at the silver-colored
band inside the fuse. If the band is broken
or melted, replace the fuse. Be sure to
replace a bad fuse with a new one of the
identical size and rating.
Fuses of the same amperage can be
temporarily borrowed from another fuse
location, if a fuse goes out. Replace the fuse
as soon as possible.
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 0237
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-
14430430) - 2021 - CRC - 9/9/20
Vehicle Care 261

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
262 Vehicle Care
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F1 Traction control module power
F2 Engine control module power
F3 Air conditioning clutch
F4 –
F5 Engine control module ignition/Integrated
chassis control module/
Fuel pump power
module
F6 Wipers F7 Cargo lamp/Bed lighting
F8 Fuel injectors –even
F9 Fuel injectors –odd
F10 Engine control module 1 F11 Oxygen/Mass air flow/ Humidity/Induction air
temperature/Throttle
inlet pressure sensors
F12 Starter Fuses
Usage
F13 Traction control module
F14 –
F15 –
F16 –
F17 Front axle actuator
F18 –
F19 Aeroshutters
F20 –
F21 Front blower
F22 Antilock brake system valves
F23 –
F24 Trailer F25 Transfer case electronic control
F26 Antilock brake system pump
F27 Trailer brake control module/Trailer wiring
provisions
F28 Rear window defogger Fuses
Usage
F29 –
F30 Driver heated seat F31 –
F32 Passenger heated seat
F33 Right headlamp low beam/Front right park
lamp/Right front side
marker/Right rear side
marker
F34 Fuel pump power module
F35 Integrated chassis control module
F36 Center high-mounted stoplamp
F37 Right high-beam headlamp
F38 Left high-beam headlamp
F39 –
F40 –
F41 –
F42 –

GMC Canyon/Canyon Denali Owner Manual (GMNA-Localizing-U.S./Canada-
14430430) - 2021 - CRC - 9/9/20
Vehicle Care 263
FusesUsage
F43 Not used
F44 –
F45 Vaccuum pump
F46 Engine control module 2 F47 Mid park phase lock/ Active fuel
management/Engine oil
and canister purge
solenoid(s)/Oxygen
sensor
F48 Fog lamps
F49 –
F50 Trailer parking lamps F51 Horn
F52 –
F53 –
F54 –
F55 –
F56 Washer pump F57 –
F58 – Fuses
Usage
F59 –
F60 Mirrors defogger F61 –
F62 Canister vent solenoid
F63 –
F64 Trailer reverse lamp F65 Left trailer stoplamp/ Turn signal lamps
F66 Right trailer stoplamp/ Turn signal lamps
F67 Electric power steering
F68 –
F69 Battery regulated voltage control
F70 –
F71 –
F72 –
F73 –
F74 Generator F75 – Relays
Usage
K1 Air conditioning clutch
K2 Starter
K3 –
K4 Wipers speed K5 Wipers control
K6 Cargo lamp/Bed lighting K7 Powertrain
K8 –
K9 –
K10 –
K11 Center high-mounted stoplamp
K12 –
K13 Vacuum pump
K14 Trailer parking lamps K15 Run/Crank
K16 –
K17 Rear window defogger