2021 GMC YUKON Owner's Manual

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
334 Vehicle Care
FusesUsage
1 –
2 –
3 –
4 –
6 ELM 7 7 ELM 4
8 –
9 ELM 5
10 ELM 6 11 Spare
12 –
13 Washer front
14 Washer rear 15 Rec 2
16 Power sounder 17 Spare
19 DC/AC inverter
20 IECR 2 21 –
22 IECL 2 Fuses
Usage
24 EBCM 25 REC 1
26 Camera wash 27 Horn
28 Headlamp RT
29 Headlamp LT
30 ELM 3 31 ELM 1
32 –
33 Not R/C
34 –
37 OBD body
38 MISC body
39 Upfitter
40 MISC IP 41 Trailer parking lamps
42 Right taillamp
44 Trailer tow 45 Secondary axle motor
46 ECM ignition Fuses
Usage
47 OBD engine
48 –
49 TCM 50 A/C clutch 51 TCCM
52 Front wiper
53 –
54 Left taillamps 55 Trailer back up lamp
56 SADS 57 Spare
58 Starter motor
60 AFM 1 61 ALC main
62 ICCM/CVS/DEF
63 Trailer brake
65 AUX UEC
66 Left cool fan motor 67 AFM2
68 ALC motor

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
Vehicle Care 335
FusesUsage
69 Starter pinion 71 Cool fan motor lower
72 Right cool fan motor/ Lower
73 Left trailer stop turn lamp
74 TIM 2 75 DEFC
76 ELEC RNG BDS
78 ECM
79 –
80 Cabin cool pump 17W 81 Right trailer stop turn lamp
82 TIM 1
83 FTZM
84 Trailer battery 85 Engine
86 ECM 87 Injector B even
88 02 B sensor Fuses
Usage
89 02 A sensor
90 Injector A odd 91 ECM throttle control
92 Cool fan clutch AERO shutter
Relays Usage
5 –
18 DC/AC inverter
23 –
35 Park lamp
36 Run/Crank
43 Secondary axle motor
59 A/C clutch
64 Starter motor 70 Starter pinion 77 PowertrainInstrument Panel Fuse Block
The right instrument panel fuse block access
door is on the passenger side edge of the
instrument panel.
Pull off the cover to access the fuse block.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
336 Vehicle Care
There are relays on the back of the fuse
block. To access, press the tabs and remove
the fuse block.The vehicle may not be equipped with all of
the fuses, relays, and features shown. Fuses Usage
Fuses Usage
F1 Right door
F2 Left door
F3 UGDO/OHC/camera
F4 BCM 2 F5 Displays
F6 Front blower
F8 Left door panel
F10 Tilt/column lock F11 USB/DLC
F12 CGM/onstar
F14 Right door panel F17 Steering wheel control
F18 AVM 1
F19 –
F20 –
F21 –
F22 Heated wheel
F23 –
F24 –

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
Vehicle Care 337
FusesUsage
F25 SEO/UPFITTER
F26 USB/SEO RAP F27 APO/RAP
F28 Spare
F30 SDM AOS F31 BCM 3
F32 CSM/USB
F33 BCM 4
F34 Out of park
F40 –
F41 –
F42 Electric park brake switch
F43 RSE
F44 AVM 2 F45 Radio module
F46 BCM 1A F47 –
F48 TCM
F49 BCM 1 F50 DMS Fuses
Usage
F51 –
F52 –
F53 –
F54 Sunroof F55 APO 3
F56 DC/DC CNV BATT 1 F57 DC/DC CNV BATT 2
F58 Spare
F59 –
Circuit
Breakers Usage
CBO1 APO1
CBO2 APO2
Relays Usage
K1 –
K2 RAP/ACCY 1
K4 RAP/ACCY 2 K5 –Rear Compartment Fuse Block
The rear compartment fuse block is behind
the access panel on the left side of the
compartment.
Pull the panel out by grabbing the finger
access slot at the rear edge.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
338 Vehicle Care
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F01 RFA
F02 WCM
F03 Heated seat module row 1 (Battery 1)
F04 MSM driver F05 –
F06 –
F07 Amp aux 2
F08 –
F09 SEO UPFTR 2 F10 Motor seatbelt passenger F11 Power folding seat row 2
F12 GBS
F13 –
F14 –
F15 Heated seat module row 1 (Battery 2)
F16 RH CINCH latch F17 Memory seat module passenger
F18 Rear wiper Fuses
Usage
F19 Motor seatbelt driver
F20 Rear defogger F21 –
F22 Rear HVAC display control
F23 EOCM
F24 Amp aux 3 F25 OBS DET
F26 RDCM F27 Amp aux 1
F28 VPM
F29 –
F30 –
F31 Amp
F32 –
F33 ICCM
F34 Heated seat module row 2 F35 HFCR
F36 ELM F37 –
F38 Power slide console

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
Vehicle Care 339
FusesUsage
F39 –
F40 –
F41 –
F42 –
F43 UPA
F44 –
F45 AFL AHL
F46 Rear HVAC blower motor F47 LH CINCH latch
F48 Power seat recline module
F49 Lift glass F50 Driver power seat F51 Power liftgate module
F52 Passenger power seat
K53 –
K54 –
K55 L/GLASSWheels and Tires
Tires
Every new GM vehicle has high-quality
tires made by a leading tire
manufacturer. See the warranty manual
for information regarding the tire
warranty and where to get service. For
additional information refer to the tire
manufacturer.
{Warning
.Poorly maintained and improperly
used tires are dangerous.
.Overloading the tires can cause
overheating as a result of too
much flexing. There could be a
blowout and a serious crash. See
Vehicle Load Limits 0222.
.Underinflated tires pose the same
danger as overloaded tires. The
resulting crash could cause serious
injury. Check all tires frequently to
(Continued)
Warning (Continued)
maintain the recommended
pressure. Tire pressure should be
checked when the tires are cold.
.Overinflated tires are more likely
to be cut, punctured, or broken by
a sudden impact —such as when
hitting a pothole. Keep tires at the
recommended pressure.
.Worn or old tires can cause a
crash. If the tread is badly worn,
replace them.
.Replace any tires that have been
damaged by impacts with
potholes, curbs, etc.
.Improperly repaired tires can cause
a crash. Only the dealer or an
authorized tire service center
should repair, replace, dismount,
and mount the tires.
(Continued)

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
340 Vehicle Care
Warning (Continued)
.Do not spin the tires in excess of
56 km/h (35 mph) on slippery
surfaces such as snow, mud, ice,
etc. Excessive spinning may cause
the tires to explode.
See Tire Pressure for High-Speed
Operation 0345 for inflation pressure
adjustment for high-speed driving.
All-Season Tires
This vehicle may come with all-season tires.
These tires are designed to provide good
overall performance on most road surfaces
and weather conditions. Original equipment
tires designed to GM's specific tire
performance criteria have a TPC specification
code molded onto the sidewall. Original
equipment all-season tires can be identified
by the last two characters of this TPC code,
which will be “MS.”
Consider installing winter tires on the
vehicle if frequent driving on snow or
ice-covered roads is expected. All-season tires
provide adequate performance for most
winter driving conditions, but they may not offer the same level of traction or
performance as winter tires on snow or
ice-covered roads. See
Winter Tires0340.
Winter Tires
This vehicle was not originally equipped
with winter tires. Winter tires are designed
for increased traction on snow and
ice-covered roads. Consider installing winter
tires on the vehicle if frequent driving on ice
or snow covered roads is expected. See your
dealer for details regarding winter tire
availability and proper tire selection. Also,
see Buying New Tires 0351.
With winter tires, there may be decreased
dry road traction, increased road noise, and
shorter tread life. After changing to winter
tires, be alert for changes in vehicle
handling and braking.
If using winter tires:
.Use tires of the same brand and tread
type on all four wheel positions.
.Use only radial ply tires of the same size,
load range, and speed rating as the
original equipment tires.
Winter tires with the same speed rating as
the original equipment tires may not be
available for H, V, W, Y, and ZR speed rated tires. If winter tires with a lower speed
rating are chosen, never exceed the tire's
maximum speed capability.
Low-Profile Tires
If the vehicle has 275/55R20 or 275/
50R22 size tires, they are classified as
low-profile tires.
Caution
Low-profile tires are more susceptible to
damage from road hazards or curb impact
than standard profile tires. Tire and/or
wheel assembly damage can occur when
coming into contact with road hazards
like potholes, or sharp edged objects,
or when sliding into a curb. The warranty
does not cover this type of damage. Keep
tires set to the correct inflation pressure
and when possible, avoid contact with
curbs, potholes, and other road hazards.
All-Terrain Tires
This vehicle may have all-terrain or
mud-terrain tires. These tires provide good
performance on most road surfaces, weather
conditions, and for off-road driving. See
Off-Road Driving 0216.

GMC Yukon/Yukon XL/Denali Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-13690468) - 2021 - crc - 8/14/20
Vehicle Care 341
The tread pattern on these tires may wear
more unevenly than other tires. Consider
rotating the tires more frequently than at
12 000 km (7,500 mi) intervals if irregular
wear is noted when the tires are inspected.
SeeTire Inspection 0349.
Tire Sidewall Labeling
Useful information about a tire is
molded into the sidewall. The example
shows a typical passenger vehicle tire
sidewall.
Passenger (P-Metric)/Spare Tire
(1) Tire Size:The tire size is a
combination of letters and numbers
used to define a particular tire's width, height, aspect ratio, construction type,
and service description. See the "Tire
Size" illustration in this section.
(2) TPC Spec (Tire Performance Criteria
Specification)
:Original equipment tires
designed to GM's specific tire
performance criteria have a TPC
specification code molded onto the
sidewall. GM's TPC specifications meet
or exceed all federal safety guidelines.
(3) DOT (Department of
Transportation)
:The Department of
Transportation (DOT) code indicates that
the tire is in compliance with the U.S.
Department of Transportation Motor
Vehicle Safety Standards.
DOT Tire Date of Manufacture
:The last
four digits of the Tire Identification
Number indicate the tire manufactured
date. The first two digits represent the
week and the last two digits, the year.
For example, the third week of the year
2020 would have a 4-digit DOT date
of
0320. Week 01 is the first full week (Sunday
through Saturday) of each year.
(4) Tire Identification Number (TIN):
The letters and numbers following the
DOT code are the TIN. The TIN shows
the manufacturer and plant code, tire
size, and date the tire was
manufactured. The TIN is molded onto
both sides of the tire, although only
one side may have the date of
manufacture.
(5) Tire Ply Material
:The type of cord
and number of plies in the sidewall and
under the tread.
(6) Uniform Tire Quality Grading
(UTQG)
:Tire manufacturers are
required to grade tires based on three
performance factors: tread wear,
traction, and temperature resistance.
For more information, see Uniform Tire
Quality Grading 0353.
(7) Maximum Cold Inflation Load
Limit
:Maximum load that can be
carried and the maximum pressure
needed to support that load. For
information on recommended tire
pressure see Tire Pressure 0344 and
Vehicle Load Limits 0222.