Module GMC SIERRA 2021 User Guide

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-14632426) - 2021 - CRC - 11/5/20
Vehicle Care 355
FusesUsage
6 –
7 –
8 Fog lamp
9 –
10 –
11 Police upfitter
12 –
13 Washer front
14 Washer rear 15 –
16 –
17 IECL 1
19 DC/AC inverter
20 IECR 2 (LD) / EBCM2 (HD)
21 –
22 IECL 2
24 EBCM 1 25 –
26 – Fuses
Usage
27 Horn
28 –
29 –
30 –
31 –
32 Rear window defogger
33 Heated mirror
34 Parking lamp left 37 –
38 –
39 –
40 Misc ignition 41 Trailer parking lamp
42 Park lamp right
44 –
45 –
46 Engine control module ignition
47 Transmission control module ignition Fuses
Usage
48 –
49 Transmission control module
50 A/C clutch 51 Transfer case control module
52 Front wiper
53 Center high-mounted stop lamp
54 Trailer reverse lamp 55 Trailer back-up lamp
56 SADS 57 TTPM/SBZA
58 Starter motor (LD & HD DSL)
60 Active fuel management 1
61 VES
62 Integrated chassis control module/CVS
63 Trailer battery

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-14632426) - 2021 - CRC - 11/5/20
356 Vehicle Care
FusesUsage
65 Auxiliary underhood electrical center
66 Cooling fan motor left 67 Active fuel management 2
68 –
69 Starter Pinion (LD) / Starter Motor (HD Gas)
71 Cooling fan
72 Cooling fan right/Lower
73 Trailer stop/turn lamp left
74 Trailer Interface Module 1
75 DEFC
76 Electric RNG BDS
78 Engine control module
79 Auxiliary battery
80 Cabin cooling pump 81 Trailer stop/turn lamp right Fuses
Usage
82 Trailer Interface Module 2
83 FTZM
84 Trailer brake 85 ENG
86 Engine control module 87 Injector B even
88 O2 B sensor
89 O2 A sensor
90 Injector A odd 91 Engine control module throttle control
92 Cool fan clutch/ Aeroshutter Relays
Usage
5 Headlamp
18 DC/AC inverter
23 Rear window defogger
35 Parking lamp
36 Run/Crank
43 –
59 A/C clutch
64 Starter Motor (LD & HD DSL)
70 Starter Pinion (LD) / Starter Motor (HD Gas)
77 Powertrain

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-14632426) - 2021 - CRC - 11/5/20
Vehicle Care 359
To access the back of the fuse block:
1. Push the tab at the top of fuseblock down.
2. Pull the top of the fuse block outward.
3. Reverse Steps 1–2 to reinstall.
Back
The vehicle may not be equipped with all of
the fuses, relays, and features shown. Fuses Usage
F1 Right doors
F2 Left doors
F3 Universal garage door opener
F4 –
F5 –
F6 Front blower
F8 Lumbar switch
F10 Body control module 6/ Body control module 7
F11 Seat/Column lock module
F12 Body control module 3/ Body control module 5
F14 Mirrors/Windows module F17 Steering wheel controls
F18 Video processing module/ Obstacle detection
F19 DLIS
F20 Ventilated seats F21 NOT R/C
F22 Heated steering wheel

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-14632426) - 2021 - CRC - 11/5/20
360 Vehicle Care
FusesUsage
F23 MISC R/C
F24 Instrument panel cluster ignition/Overhead
F25 Heating, ventilation, and air conditioning ignition/
Heating, ventilation, and
air conditioning auxiliary
F26 USB ports/Special equipment option retained
accessory power
F27 Accessory power outlet/ retained accessory power
F28 Accessory power outlet/ Battery
F30 Sensing and diagnostic module/Parking brake
F31 Body control module 4
F32 Special equipment option/ Data link connection
F33 Body control module 8
F34 Cargo lamp
F40 CGM F41 Infotainment 1 Fuses
Usage
F42 TCP
F43 –
F44 Active vibration management
F45 Body control module 2
F46 Heating, ventilation, and air conditioning/Battery 1
F47 Instrument panel cluster/ Battery
F48 Transmission control module
F49 Body control module 1 F50 –
F51 Battery 1
F52 Battery 2
F53 –
F54 Sunroof F55 Driver power seat
F56 DC DC TRANS 1 F57 DC DC TRANS 2
F58 Infotainment 2 Circuit
Breakers Usage
1 Accessory power outlet 2
2 Accessory power outlet 1/ Cigarette Lighter
3 Accessory power outlet 3
4 Accessory power outlet 4
Relays Usage
K1 Run/Crank
K2 Retained accessory power/ Accessory 1
K4 Retained accessory power/ Accessory 2
K5 –
Wheels 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

GMC Sierra/Sierra Denali 1500 Owner Manual (GMNA-Localizing-U.S./
Canada/Mexico-14632426) - 2021 - CRC - 11/5/20
Customer Information 437
Administrator, NHTSA
1200 New Jersey Avenue, S.E.
Washington, D.C. 20590
You can also obtain other information
about motor vehicle safety from
http://www.safercar.gov
.
Reporting Safety Defects to the
Canadian Government
If you live in Canada, and you believe
that the vehicle has a safety defect,
notify Transport Canada immediately,
and notify General Motors of Canada
Company. Call Transport Canada at
1-800-333-0510; go to:
www.tc.gc.ca/recalls (English)
www.tc.gc.ca/rappels (French)
or write to:
Transport Canada
Motor Vehicle Safety Directorate
Defect Investigations and Recalls
Division
80 Noel Street
Gatineau
,QC J8Z 0A1
Reporting Safety Defects to
General Motors
In addition to notifying NHTSA (or Transport
Canada) in a situation like this, notify
General Motors.
In the U.S., call 1-800-462-8782, or write:
GMC Customer Assistance Center
P.O. Box 33172
Detroit, MI 48232-5172
In Canada, call 1-800-263-3777 (English) or
1-800-263-7854 (French), or write:
General Motors of Canada Company
Customer Care Centre, Mail Code:
CA1-163-005
1908 Colonel Sam Drive
Oshawa, Ontario L1H 8P7
In Mexico, call 800-466-0812 or
800-466-0801.
In other Central America and Caribbean
Countries, call 52-555-901-2369.
Vehicle Data Recording and
Privacy
The vehicle has a number of computers that
record information about the vehicle’s
performance and how it is driven or used.
For example, the vehicle uses computer
modules to monitor and control engine and
transmission performance, to monitor the
conditions for airbag deployment and
deploy them in a crash, and, if equipped, to
provide antilock braking to help the driver
control the vehicle. These modules may
store data to help the dealer technician
service the vehicle or to help GM improve
safety or features. Some modules may also
store data about how the vehicle is
operated, such as rate of fuel consumption
or average speed. These modules may retain
personal preferences, such as radio presets,
seat positions, and temperature settings.