2024 CHEVROLET SILVERADO auxiliary battery

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
138 Lighting
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . . . . . . . . . 138
Exterior Lamps Off Reminder . . . . . . . . . . 140
Headlamp High/Low-Beam Changer . . . 140
Flash-to-Pass . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Daytime Running Lamps (DRL) . . . . . . . . 140
Automatic Headlamp System . . . . . . . . . . 140
Hazard Warning Flashers . . . . . . . . . . . . . . . 141
Turn and Lane-Change Signals . . . . . . . . . 142
Fog Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Task Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Auxiliary Roof-Mounted Lamp . . . . . . . . . 143
Exterior Cargo Lamps . . . . . . . . . . . . . . . . . . 144
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Dome Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Reading Lamps . . . . . . . . . . . . . . . . . . . . . . . . 145
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . . . . . . . . . 146
Exit Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Battery Load Management . . . . . . . . . . . . 146
Battery Power Protection . . . . . . . . . . . . . . 147
Exterior Lighting Battery Saver . . . . . . . . 147
Exterior Lighting
Exterior Lamp Controls
The exterior lamp controls are on the
instrument panel to the left of the steering
wheel.
O: Turns off the automatic headlamps and
Daytime Running Lamps (DRL). Turn the
headlamp control to
Oagain to turn the
automatic headlamps or DRL back on.
For vehicles first sold in Canada, off will only
work when the vehicle is in P (Park). AUTO :
Automatically turns on the
headlamps, parking lamps, taillamps,
instrument panel lights, roof marker lamps
(if equipped), front/rear sidemarker lamps,
and license plate lamps.
;: Turns on all lamps, except the
headlamps and fog lamps, if equipped.
For some trim levels and trucks first sold in
Canada, the headlamps may turn on with
the parking lamps.
2: Turns on the headlamps, the parking
lamps, taillamps, instrument panel lights,
roof marker lamps (if equipped), front/rear
sidemarker lamps, and license plate lamps.
#: If equipped, turns on the fog lamps.
See Fog Lamps 0142.
IntelliBeam System
If equipped, this system turns the vehicle
high-beam headlamps on and off according
to surrounding traffic conditions.
The system turns the high-beam headlamps
on when it is dark enough and there is no
other traffic present.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/12/22
282 Driving and Operating
to the attaching points on the bumper;
otherwise, safety chains should be attached
to holes on the trailer hitch.
Cross the safety chains under the tongue of
the trailer to help prevent the tongue from
contacting the road if it becomes separated
from the hitch. Always leave enough slack in
the safety chains to allow the combination
to turn. Never allow safety chains to drag
on the ground.
Trailer Brakes
Loaded trailers over 900 kg (2,000 lb) must
be equipped with brake systems and with
brakes for each axle. Trailer braking
equipment conforming to Canadian
Standards Association (CSA) requirement
CAN3-D313, or its equivalent, is
recommended.
State or local regulations may require
trailers to have their own braking system if
the loaded weight of the trailer exceeds
certain minimums that can vary from state
to state. Read and follow the instructions for
the trailer brakes so they are installed,
adjusted, and maintained properly. Never
attempt to tap into your vehicle's hydraulicbrake system. If you do, both the vehicle
antilock brakes and the trailer brakes may
not function, which could result in a crash.
Auxiliary Battery
If equipped, the vehicle's auxiliary battery
can be used to supply electrical power to
additional equipment that may be added,
such as a slide-in camper.
Locate the auxiliary battery connector under
the hood on the driver side of the vehicle,
next to the engine compartment fuse block.
Follow the proper installation instructions
included with any electrical equipment that
is installed.
Caution
To prevent draining the auxiliary battery,
always turn off electrical equipment
when not in use and do not use any
equipment that may exceed the
maximum amperage rating of 30 amps.
Trailer Wiring Harness
Basic Trailer Wiring
If the vehicle is not equipped with a trailer
connector on the rear bumper, a seven-wire
trailering harness is tied to the vehiclesframe. The harness requires the installation
of a trailer connector, which is available
through your dealer.
Use only a round, seven-wire connector with
flat blade terminals meeting SAE J2863
specifications for proper electrical
connectivity.
The seven-wire harness contains the
following trailer circuits:
Stop/Turn
Signal Left Yellow/Blue
Stop/Turn Signal
Right Green/Violet
Tail/Parking Lamps Gray/Brown
Reverse Lamps White/Green
Battery Feed Red/Green
Ground White
Electric Trailer Brake Blue
Heavy-Duty Trailer Wiring Harness Package
If equipped, the trailer wiring harness, with
a seven-pin connector and a four-pin
connector, is mounted on the vehicle's rear
bumper.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/12/22
Driving and Operating 283
The trailer connectors contain the following
circuits.
1. Ground
2. Tail Lamps3. 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. Ground
If 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.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/12/22
300 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) 0117.
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 069 and Adding Equipment to the
Airbag-Equipped Vehicle 069.
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.
The plow the vehicle can carry depends on
many things, such as:
.The options the vehicle came with, and
the weight of those options.
.The weight and number of passengers to
be carried.
.The weight of items added to the vehicle,
like a tool box or truck cap.
.The total weight of any additional cargo
to be carried.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
308 Vehicle Care
1. Remote Negative (–) Location. SeeJump
Starting - North America 0370.
2. Positive (+) Terminal (Under Cover). See Jump Starting - North America 0370.
3. Battery - North America 0321.
4. Engine Air Cleaner/Filter 0312.
5. Engine Oil Dipstick. See “Checking Engine
Oil” under Engine Oil 0308.
6. Engine Cooling Fan (Out of View). See Cooling System 0313.
7. Power Steering Fluid Reservoir. See Power Steering Fluid 0317.
8. Engine Oil Fill Cap. See “When to Add
Engine Oil” underEngine Oil 0308.
9. Auxiliary Battery. Battery - North
America 0321.
10. Brake Fluid Reservoir. See Brake Fluid
0 320.
11. Engine Compartment Fuse Block 0332.
12. Coolant Surge Tank and Pressure Cap. SeeCooling System 0313.
13. Windshield Washer Fluid Reservoir. See “Adding Washer Fluid” underWasher
Fluid 0318.
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 0310.
.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 0307 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.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
Vehicle Care 335
FusesUsage
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 PowertrainInstrument Panel Fuse Block (Left)
The left instrument panel fuse block access
door is on the driver side edge of the
instrument panel.
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
Pull off the cover to access the fuse block.
A fuse puller is available on the left
instrument panel end cap.

Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-16908339) - 2024 - CRC - 12/5/22
Index 419
Assistance Program, Roadside . . . . . . . . . . . . 402
Assistance SystemsAdvanced . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 246
Automatic EmergencyBraking (AEB) . . . . . . . . . . . . . . . . . . . . . . . . 259
Driving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Forward Collision Alert (FCA) System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 257
Front Pedestrian Braking (FPB) . . . . . . . . . 260
Lane Change Alert (LCA) . . . . . . . . . . . . . . . 262
Lane Departure Warning (LDW) . . . . . . . . 264
Parking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 256
Parking and Backing . . . . . . . . . . . . . . . . . . . 247
Rear Cross Traffic Alert (RCTA) . . . . . . . . . 257
Rear Vision Camera (RVC) . . . . . . . . . . . . . . 247
Surround Vision System . . . . . . . . . . . . . . . 248
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . . . . . . 158, 159
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . . . . . . . . 34
Door Locks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Emergency Braking (AEB) DisabledLight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Headlamp System . . . . . . . . . . . . . . . . . . . . . 140
Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 218
Transmission Fluid . . . . . . . . . . . . . . . . . . . . . . 311
Transmission Shift Lock Control Function Check . . . . . . . . . . . . . . . . . . . . . . . 324 Automatic Transmission
Manual Mode . . . . . . . . . . . . . . . . . . . . . . . . . 220
Auxiliary Roof Mounted Lamp . . . . . . . . . . . . . . . . . . . 143
Avoiding Untrusted Media Devices . . . . . . . .158
Axle Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323
B
BatteryExterior Lighting Battery Saver . . . . . . . . 147
Load Management . . . . . . . . . . . . . . . . . . . . . 146
Power Protection . . . . . . . . . . . . . . . . . . . . . . 147
Battery - North America . . . . . . . . . . . . . 321, 370
Blade Replacement, Wiper . . . . . . . . . . . . . . . 325
Blind Spot Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 34
Bluetooth Audio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158, 159
Overview . . . . . . . . . . . . . . . . . . . . . . . . . 165, 169
Brake
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 320
Pad Life System . . . . . . . . . . . . . . . . . . . . . . . 319
System Warning Light . . . . . . . . . . . . . . . . . . 119
Brake Pad Life System . . . . . . . . . . . . . . . . . . . 319
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319 Antilock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 227
Brake Assist . . . . . . . . . . . . . . . . . . . . . . . . . . . 229 Brakes (cont'd)
Electric Parking Brake . . . . . . . . . . . . . . . . . . 228
Braking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 194 Automatic Emergency (AEB) . . . . . . . . . . . 259
Front Pedestrian (FPB) System . . . . . . . . . 260
Break-In, New Vehicle . . . . . . . . . . . . . . . . . . . . 210
Buckle To Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . . . 327 Center High-Mounted Stoplamp(CHMSL) and Cargo Lamp . . . . . . . . . . . . 329
Halogen Bulbs . . . . . . . . . . . . . . . . . . . . . . . . . 327
Headlamp Aiming . . . . . . . . . . . . . . . . . . . . . . 327
Headlamps, Front Turn Signal, Sidemarker, and Parking Lamps . . . . . . 327
License Plate Lamps . . . . . . . . . . . . . . . . . . . 330
Taillamps, Turn Signal, Stoplamps, and Back-up Lamps . . . . . . . . . . . . . . . . . . 328
Buying New Tires . . . . . . . . . . . . . . . . . . . . . . . . 354
C
Calibration Compass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
California Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . . . . . . . . . . 304
California Proposition 65 Warning . . . . . 1, 370
Camera
Rear Vision (RVC) . . . . . . . . . . . . . . . . . . . . . . 247