2024 GMC SIERRA AUX

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
Driving and Operating 289
The trailer connectors contain the following
circuits.
1. Ground
2. Tail Lamps
3. Left Turn/Brake
4. Right Turn/Brake
1. Left Turn/Brake
2. Tail Lamps
3. Reverse Lamps
4. Battery Feed
5. Right Turn/Brake
6. Electric Brakes
7. GroundIf equipped, trailering camera connectors are
available in the bumper trailer receptacle in
place of the four pin connector. The inside
trailer auxiliary camera should be installed
on the top left hand side (A) and the rear
trailer auxiliary camera (B) should be
installed on the top right hand side.
If equipped with the fifth-wheel/gooseneck
trailer package, the harness connector is
mounted on the inside of the pickup bed
behind the rear wheel.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/13/22
306 Driving and Operating
If Tow/Haul Mode is off and this setting is
on for a Trailer Profile, each time the vehicle
is turned on, a reminder will appear in the
DIC to turn on Tow/Haul Mode when the
Trailer Profile is active.
If Tow/Haul Mode is on and this setting is
on for a Trailer Profile, the reminder will not
appear when the Trailer Profile is active.
Conversions and Add-Ons
Add-On Electrical Equipment
{Warning
The Data Link Connector (DLC) is used for
vehicle service and Emission Inspection/
Maintenance testing. SeeMalfunction
Indicator Lamp (Check Engine Light) 0122.
A device connected to the DLC —such as
an aftermarket fleet or driver-behavior
tracking device —may interfere with
vehicle systems. This could affect vehicle
operation and cause a crash. Such devices
may also access information stored in the
vehicle’s systems.
Caution
Some electrical equipment can damage
the vehicle or cause components to not
work and would not be covered by the
vehicle warranty. Always check with your
dealer before adding electrical equipment.
Add-on equipment can drain the vehicle's
12-volt battery, even if the vehicle is not
operating.
The vehicle has an airbag system. Before
attempting to add anything electrical to the
vehicle, see Servicing the Airbag-Equipped
Vehicle 073 and
Adding Equipment to the Airbag-Equipped
Vehicle 073.
For information on wiring auxiliary switches,
see www.gmupfitter.com or contact your
dealer.
Adding a Snow Plow or Similar
Equipment
Caution
Do not exceed 72 km/h (45 mph) with a
snow plow mounted to the vehicle. The
vehicle could overheat and be damaged.
Before installing a snow plow on the vehicle,
follow these guidelines:
Caution
If the vehicle does not have the snow
plow prep package, RPO VYU, adding a
plow can damage the vehicle, and the
repairs would not be covered by the
vehicle warranty. Unless the vehicle was
built to carry a snow plow, do not add
one to the vehicle. If the vehicle has RPO
VYU, then the payload the vehicle can
carry will be reduced when a snow plow
is installed. The vehicle can be damaged
if either the front or rear axle ratings or
the Gross Vehicle Weight Rating (GVWR)
are exceeded.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
314 Vehicle Care
1. Remote Negative (–) Location. SeeJump
Starting - North America 0376.
2. Positive (+) Terminal (Under Cover). See Jump Starting - North America 0376.
3. Battery - North America 0327.
4. Engine Air Cleaner/Filter 0318.
5. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 0314.
6. Engine Cooling Fan (Out of View). See Cooling System 0319.
7. Power Steering Fluid Reservoir. See Power Steering Fluid 0323.
8. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil 0314.
9. Auxiliary Battery. Battery - North
America 0327.
10. Brake Fluid Reservoir. See Brake Fluid
0 326.
11. Engine Compartment Fuse Block 0337.
12. Coolant Surge Tank and Pressure Cap. SeeCooling System 0319.
13. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” underWasher
Fluid 0324.
If the vehicle has a diesel engine, see the
Duramax diesel supplement.Engine Oil
For diesel engine vehicles, see “Engine Oil”
in the Duramax diesel supplement.
To ensure proper engine performance and
long life, careful attention must be paid to
engine oil. Following these simple, but
important steps will help protect your
investment:
.Use engine oil approved to the proper
specification and of the proper viscosity
grade. See “Selecting the Right Engine
Oil” in this section.
.Check the engine oil level regularly and
maintain the proper oil level. See
“Checking Engine Oil” and“When to Add
Engine Oil” in this section.
.Change the engine oil at the appropriate
time. SeeEngine Oil Life System 0316.
.Always dispose of engine oil properly. See
“What to Do with Used Oil” in this
section.
Checking Engine Oil
Check the engine oil level regularly, every
650 km (400 mi), especially prior to a long
trip. The engine oil dipstick handle is a loop.
See Engine Compartment Overview 0313 for
the location.
{Warning
The engine oil dipstick handle may be
hot; it could burn you. Use a towel or
glove to touch the dipstick handle.
If a low oil Driver Information Center (DIC)
message displays, check the oil level.
Follow these guidelines:
.To get an accurate reading, park the
vehicle on level ground. Check the engine
oil level after the engine has been off for
at least two hours. Checking the engine
oil level on steep grades or too soon after
engine shutoff can result in incorrect
readings. Accuracy improves when
checking a cold engine prior to starting.
Remove the dipstick and check the level.
.If unable to wait two hours, the engine
must be off for at least 15 minutes if the
engine is warm, or at least 30 minutes if
the engine is not warm. Pull out the
dipstick, wipe it with a clean paper towel
or cloth, then push it back in all the way.
Remove it again, keeping the tip down,
and check the level.

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
Vehicle Care 339
FusesUsage
6 –
7 ELM 4 –Electronic
Lighting Module 4
8 –
9 –
10 ELM 6 –Electronic
Lighting Module 6
11 BCM 3 –Body Control
Module 3
12 Rear Window Defogger
13 Washer Front
14 –
15 –
16 –
17 IECL 1
19 DC/AC Inverter
20 IECR 2 (LD)/EBCM2 (HD) 21 –
22 IECL 2
24 Fuel Heater (DSL) Fuses
Usage
25 EBCM 1 –Electronic
Brake Control Module 1
26 –
27 Horn
28 Parking Lamp Mirror/ Grill (LD)/Parking Lamp
Left (HD)
29 Parking Lamp Right (HD)
30 ELM 3 –Electronic
Lighting Module 3
31 ELM 1 –Electronic
Lighting Module 1
32 –
33 Not R/C
34 Radars (LD) 37 MISC IP Headliner Ignition
38 Seat Fan Ignition
39 Trailer Ignition Module
40 Misc Ignition 41 Trailer Parking Lamp Fuses
Usage
42 Tail Lamp Left (HD)
44 DEFC/ICCM Ignition (LD/ HD)/FTZM Ignition (HD)
45 Secondary Axle Motor
46 Engine Control Module Ignition
47 –
48 –
49 Transmission Auxiliary Oil Pump (LD)
50 A/C Clutch 51 Transfer Case Control Module
52 Front Wiper
53 Center High-Mounted Stop Lamp
54 Tail Lamp Right (HD) 55 Trailer Back-up Lamp
56 SADS (LD)/Fuel Tank Zone Module 2 (HD)
57 TTPM/SBZA
58 Starter Motor (LD)

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
340 Vehicle Care
FusesUsage
60 Powertrain Sensor 2 (DSL)
61 Active Hydraulic Steering (HD)
62 DEFC Batt 1/CVS
63 Trailer Brake
65 –
66 Cooling Fan Motor Left (LD)
67 –
68 DEFC Batt 2
69 Starter Pinion (LD Gas)/ Starter Motor (HD)
71 Cooling Fan Lower (LD)
72 Cooling Fan Right (LD)
73 Trailer Stop/Turn Lamp Left
74 Trailer Interface Module 2
75 Integrated Chassis Control Module
76 Electric RNG BDS Fuses
Usage
78 Engine Control Module
79 Cabin Cool Pump 17W (LD)/Auxiliary
Battery (HD)
80 Powertrain Sensor 1 (DSL)
81 Trailer Stop/Turn Lamp Right
82 Trailer Interface Module 1
83 FTZM 1
84 Trailer Battery 85 –
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 (HD) Fuses
Usage
92 Cool Fan Clutch (HD DSL)/Aeroshutter
(LD/HD)
Relays Usage
5 Rear Window Defogger
18 DC/AC Inverter
23 Fuel Heater (DSL)
35 Parking Lamp
36 Run/Crank
43 Secondary Axle Motor
59 A/C Clutch
64 Starter Motor (LD)/Cool Fan Clutch (HD DSL)
70 Starter Pinion (LD Gas)/ Starter Motor (HD)
77 Powertrain

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
344 Vehicle Care
FusesUsage
F1 Right Doors
F2 Left Doors
F3 –
F4 ELM 2 –Electronic Lighting
Module 2
F5 ELM 7 –Electronic Lighting
Module 7
F6 Front Blower
F8 LF Window Switch
F10 Steering Tilt (LD)/UVM (HD)/Electronic Lighting
Module 5
F11 VPM/OHC Camera
F12 CGM/TCP/COL LCK/ DMS (LD)
F14 –
F17 Steering Wheel Controls
F18 –
F19 –
F20 –
F21 – Fuses
Usage
F22 Heated Steering Wheel
F23 –
F24 –
F25 SPOT LAMP LT/RT (LD)
F26 USB Ports/Special Equipment Option Retained
Accessory Power
F27 Accessory Power Outlet/ Retained Accessory Power
F28 Accessory Power Outlet/ Battery
F30 SDM/ICS/IPC/HUD/HMDTY (HD)/HDLM (LD)
F31 BCM 2 –Body Control
Module 2
F32 RFA WCM AUX JACK/CSM AUX JACK/TBCS
F33 BCM 4 –Body Control
Module 4
F34 –
F40 –
F41 – Fuses
Usage
F42 Electric Park Brake Switch
F43 –
F44 Shifter Interface Board (LD) F45 Radio Lo
F46 –
F47 –
F48 Transmission Control Module
F49 Body Control Module 1 F50 –
F51 Battery 1 (HD)
F52 Battery 2 (HD)
F53 –
F54 Sunroof F55 Driver Power Seat
F56 DC DC TRANS 1 (LD) F57 DC DC TRANS 2 (LD)
F58 –

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
426 Index
Assistance Program, Roadside . . . . . . . . . . . . 408
Assistance SystemsAdvanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 252
Automatic EmergencyBraking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 265
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263
Front Pedestrian Braking (FPB) . . . . . . . . . 266
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 268
Lane Departure Warning (LDW) . . . . . . . . 270
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 262
Parking and Backing . . . . . . . . . . . . . . . . . . . 253
Rear Cross Traffic Alert (RCTA) . . . . . . . . . 263
Rear Vision Camera (RVC) . . . . . . . . . . . . . . 253
Surround Vision System . . . . . . . . . . . . . . . 254
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . 163, 164
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 37
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Emergency Braking (AEB) DisabledLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Headlamp System . . . . . . . . . . . . . . . . . . . . . 145
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 223
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 317
Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . . . 330 Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 226
Auxiliary Roof Mounted Lamp . . . . . . . . . . . . . . . . . . . 148
Avoiding Untrusted Media Devices . . . . . . . 163
Axle Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 329
B
BatteryExterior Lighting Battery Saver . . . . . . . . 152
Load Management . . . . . . . . . . . . . . . . . . . . . 152
Power Protection . . . . . . . . . . . . . . . . . . . . . . 152
Battery - North America . . . . . . . . . . . . .327, 376
Blade Replacement, Wiper . . . . . . . . . . . . . . . . 331
Blind Spot Mirrors . . . . . . . . . . . . . . . . . . . . . . . . .37
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163, 164
Overview . . . . . . . . . . . . . . . . . . . . . . 170, 171, 174
Brake
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 326
Pad Life System . . . . . . . . . . . . . . . . . . . . . . . 325
System Warning Light . . . . . . . . . . . . . . . . . 124
Brake Pad Life System . . . . . . . . . . . . . . . . . . . 325
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 325 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 235 Brakes (cont'd)
Electric Parking Brake . . . . . . . . . . . . . . . . . . 234
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 Automatic Emergency (AEB) . . . . . . . . . . . 265
Front Pedestrian (FPB) System . . . . . . . . . 266
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 216
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . 333 Center High-Mounted Stoplamp(CHMSL) and Cargo Lamp . . . . . . . . . . . . 335
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 333
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 333
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . 333
License Plate Lamps . . . . . . . . . . . . . . . . . . . 335
Taillamps, Turn Signal, Stoplamps, and Back-up Lamps . . . . . . . . . . . . . . . . . . 334
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 360
C
Calibration Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
California Perchlorate Materials Requirements . . . 310
California Proposition 65 Warning . . . . . 1, 376
Camera Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 253
Truck Bed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada-16908340) - 2024 - CRC - 12/7/22
430 Index
General Information (cont'd)Vehicle Care . . . . . . . . . . . . . . . . . . . . . . . . . . . 310
Glass Replacement . . . . . . . . . . . . . . . . . . . . . . . . 331
Global Positioning System (GPS) . . . . . . . . . 167
Glove Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 408
Guidance Problems with the Route . . . . . . . . . . . . . . 168
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Hazard Warning Flashers . . . . . . . . . . . . . . . . 146
Head Restraints . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Head-Up Display (HUD) . . . . . . . . . . . . . . . . . . . 135
HeadlampsAiming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 333
Automatic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 333
Daytime Running Lamps (DRL) . . . . . . . . . 145
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Headlamps, Front Turn Signal,
Sidemarker, and Parking Lamps . . . . . . 333
High-Beam On Light . . . . . . . . . . . . . . . . . . . 130
High/Low Beam Changer . . . . . . . . . . . . . . 145
Lamps On Reminder . . . . . . . . . . . . . . . . . . . 130 Heated
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Rear Seats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Steering Wheel . . . . . . . . . . . . . . . . . . . . . . . . 105
Ventilated Front Seats . . . . . . . . . . . . . . . . . . 54
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 219
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191, 193
High-Beam On Light . . . . . . . . . . . . . . . . . . . . . 130
Hill Descent Control (HDC) . . . . . . . . . . . . . . . . . 237
Descent Control Light . . . . . . . . . . . . . . . . . . 126
Hill and Mountain Roads . . . . . . . . . . . . . . . . 207
Hill Start Assist (HSA) . . . . . . . . . . . . . . . . . . . . 235
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 312
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
How to Wear Seat Belts Properly . . . . . . . . . 58
HVAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 191, 193
I
Ignition Positions . . . . . . . . . . . . . . . . . . . . . . . . 216
Immobilizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Indicator Pedestrian Ahead . . . . . . . . . . . . . . . . . . . . . . 126
Vehicle Ahead . . . . . . . . . . . . . . . . . . . . . . . . . 126
Indicators
Warning Lights and Gauges . . . . . . . . . . . . . 111
Infants and Young Children, Restraints . . . . 76 Information
Publication Ordering . . . . . . . . . . . . . . . . . . . 413
Infotainment Using the System . . . . . . . . . . . . . . . . . . . . . . . 157
Infotainment System . . . . . . . . . . . . . . . . . . . . 416
Inspection Multi-Point Vehicle . . . . . . . . . . . . . . . . . . . . 396
Instrument Cluster . . . . . . . . . . . . . . . . . . . . 112, 113
Instrument Panel Overview . . . . . . . . . . . . . . . . .5
Interior Rearview Mirrors . . . . . . . . . . . . . . . . . 38
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 153
J
Jump Starting - North America . . . . . . . . . . . . . . . 376
K
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14Remote . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Remote Operation . . . . . . . . . . . . . . . . . . . . . . . 15
L
Labeling, Tire Sidewall . . . . . . . . . . . . . . . . . . . 346
LampsAuxiliary Roof Mounted Lamp . . . . . . . . . 148
Daytime Running (DRL) . . . . . . . . . . . . . . . . 145
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Exterior Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 149
Exterior Controls . . . . . . . . . . . . . . . . . . . . . . . 143