wiring CHEVROLET SILVERADO 2017 3.G User Guide

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 343
Other ITBC-Related DIC Messages
In addition to displaying TRAILERGAIN and OUTPUT through theDIC, trailer connection and ITBCsystem status are displayed onthe DIC.
TRAILER CONNECTED: Thismessage will briefly display when atrailer with electric brakes is firstconnected to the vehicle. Thismessage will automatically turn offin about 10 seconds. This messagecan be acknowledged before itautomatically turns off.
CHECK TRAILER WIRING: Thismessage will display if:
.The ITBC system firstdetermines connection to atrailer with electric brakes andthen the trailer harness becomesdisconnected from the vehicle.
If the disconnect occurs whilethe vehicle is stationary, thismessage will automatically turnoff in about 30 seconds. Thismessage will also turn off if it isacknowledged or if the trailerharness is reconnected.
If the disconnect occurs whilethe vehicle is moving, thismessage will continue until theignition is turned off. Thismessage will also turn off if it isacknowledged or if the trailerharness is reconnected.
.There is an electrical fault in thewiring to the trailer brakes. Thismessage will continue as longas there is an electrical fault inthe trailer wiring. This messagewill also turn off if it isacknowledged.
To d e t e r m i n e i f t h e e l e c t r i c a l f a u l t i son the vehicle side or trailer side ofthe trailer wiring harnessconnection:
1. Disconnect the trailer wiringharness from the vehicle.
2. Turn the ignition off.
3. Wait 10 seconds, then turn theignition back to RUN.
4. If the CHECK TRAILERWIRING message reappears,the electrical fault is on thevehicle side.
If the CHECK TRAILERWIRING message onlyreappears when connecting thetrailer wiring harness to thevehicle, the electrical fault is onthe trailer side.
SERVICE TRAILER BRAKESYSTEM: This message will displaywhen there is a problem with theITBC system. If this messagecontinues over multiple ignitioncycles, there is a problem with theITBC system. Have the vehicleserviced.
If either the CHECK TRAILERWIRING or SERVICE TRAILERBRAKE SYSTEM message displayswhile driving, the ITBC system maynot be fully functional or may notfunction at all. When trafficconditions allow, carefully pull thevehicle over to the side of the roadand turn the ignition off. Check thewiring connection to the trailer andturn the ignition back on. If either ofthese messages continues, eitherthe vehicle or trailer needs service.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 345
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)
0138.Adeviceconnectedtothe
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’ssystems.
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 thevehicle's 12-volt battery, even if thevehicle is not operating.
The vehicle has an airbag system.Before attempting to add anythingelectrical to the vehicle, seeServicing the Airbag-EquippedVehicle086andAdding Equipmentto the Airbag-EquippedVehicle087.
For information on wiring auxiliaryswitches, see www.gmupfitter.comor 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 thevehicle, 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
(Continued)

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
348 Driving and Operating
For example, adding a 318 kg(700 lb) snow plow actually addsmore than 318 kg (700 lb) to thefront axle. Using the formula, if thesnow plow is 122 cm (4 ft) in front ofthe front axle and the wheelbase is305 cm (10 ft), then:W=318kg(700lb)A=122cm(4ft)W.B. = 305 cm (10 ft)
(W x (A + W.B.)/W.B. =(318 x (122 + 305))/305 = 445 kg(980 lb)
This means if the front axle reservecapacity is more than 445 kg(980 lb), the snow plow could beadded without exceeding thefront GAWR.
Heavier equipment can be added onthe front of the vehicle if less cargoor fewer passengers are carried,or by positioning cargo toward therear. This reduces the load on thefront. However, the front GAWR,rear GAWR, and Gross VehicleWeight Rating (GVWR) must neverbe exceeded.
{Warning
On some vehicles that have
certain front mounted equipment,
such as a snow plow, it may be
possible to load the front axle to
the front Gross Axle Weight
Rating (GAWR) but not have
enough weight on the rear axle to
have proper braking performance.
If the brakes cannot work
properly, the vehice could crash.
Always follow the snow plow
manufacturer or installer's
recommendation for rear ballast
to ensure a proper front and rear
weight distribution ratio.
Maintaining a proper front and
rear weight distribution ratio is
necessary to provide proper
braking performance.
To t a l v e h i c l e r e s e r v e c a p a c i t y i s t h edifference between the GVWR andthe weight of the truck with full fueland passengers. It is the amount ofweight that can be added to thevehicle before reaching the GVWR.Reserve capacity numbers are
intended as a guide when selectingthe amount of equipment or cargothe truck can carry. If unsure of thevehicle's front, rear, or total weight,go to a weigh station and weigh thevehicle. Your dealer can also helpwith this.
The total vehicle reserve capacityfor the vehicle is in the lower rightcorner of the Certification/Tire labelas shown previously.
See your dealer for additionaladvice and information about usingasnowplowonthevehicle.Also,seeVehicle Load Limits0259.
Emergency Roof Lamp
Provisions
Vehicles with the RPO VYU snowplow prep package also have anemergency roof lamp provisionpackage, RPO TRW. Wiring for theemergency roof lamp is providedabove the overhead console. SeeAuxiliary Roof-Mounted Lamp0176for switch location.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
350 Vehicle Care
Vehicle Care
General Information
General Information . . . . . . . . . . 351California Proposition65 Warning . . . . . . . . . . . . . . . . . 351California PerchlorateMaterials Requirements . . . . . 352Accessories andModifications . . . . . . . . . . . . . . . . 352
Vehicle Checks
Doing Your OwnService Work . . . . . . . . . . . . . . . 353Hood . . . . . . . . . . . . . . . . . . . . . . . . . 353Engine CompartmentOverview . . . . . . . . . . . . . . . . . . . . 354Engine Oil . . . . . . . . . . . . . . . . . . . . 359Engine Oil Life System . . . . . . . 362Automatic Transmission Fluid(6-Speed Transmission) . . . . . 363Automatic Transmission Fluid(8-Speed Transmission) . . . . . 366Manual Transmission Fluid . . . 366Hydraulic Clutch . . . . . . . . . . . . . . 366Engine Air Cleaner/Filter . . . . . . 367Cooling System . . . . . . . . . . . . . . 368Engine Coolant . . . . . . . . . . . . . . . 369Engine Overheating . . . . . . . . . . 372
Overheated Engine ProtectionOperating Mode . . . . . . . . . . . . . 374Engine Fan . . . . . . . . . . . . . . . . . . . 374Power Steering Fluid (1500Series) . . . . . . . . . . . . . . . . . . . . . . 375Power Steering Fluid (2500/3500 Series) . . . . . . . . . . . . . . . . 375Washer Fluid . . . . . . . . . . . . . . . . . 375Brakes . . . . . . . . . . . . . . . . . . . . . . . 376Brake Fluid . . . . . . . . . . . . . . . . . . . 377Battery - North America . . . . . . 378Four-Wheel Drive . . . . . . . . . . . . . 379Front Axle . . . . . . . . . . . . . . . . . . . . 380Rear Axle . . . . . . . . . . . . . . . . . . . . 380Noise Control System . . . . . . . . 382Starter Switch Check . . . . . . . . . 383Automatic Transmission ShiftLock Control FunctionCheck . . . . . . . . . . . . . . . . . . . . . . . 383Ignition Transmission LockCheck . . . . . . . . . . . . . . . . . . . . . . . 383Park Brake and P (Park)Mechanism Check . . . . . . . . . . 384Wiper Blade Replacement . . . . 384Glass Replacement . . . . . . . . . . 385
Headlamp Aiming
Headlamp Aiming . . . . . . . . . . . . 385
Bulb Replacement
Bulb Replacement . . . . . . . . . . . . 385
Halogen Bulbs . . . . . . . . . . . . . . . . 385High Intensity Discharge (HID)Lighting . . . . . . . . . . . . . . . . . . . . . 386LED Lighting . . . . . . . . . . . . . . . . . 386Headlamps, Front Turn Signal,Sidemarker, and ParkingLamps . . . . . . . . . . . . . . . . . . . . . . 386Fog Lamps . . . . . . . . . . . . . . . . . . . 387Ta i l l a m p s ( C h a s s i s C a bModels) . . . . . . . . . . . . . . . . . . . . . 387Ta i l l a m p s , T u r n S i g n a l ,Stoplamps, and Back-UpLamps . . . . . . . . . . . . . . . . . . . . . . 387Center High-MountedStoplamp (CHMSL) andCargo Lamp . . . . . . . . . . . . . . . . . 389Replacement Bulbs . . . . . . . . . . . 389
Electrical System
High Voltage Devices andWiring . . . . . . . . . . . . . . . . . . . . . . . 389Electrical System Overload . . . 389Fuses . . . . . . . . . . . . . . . . . . . . . . . . 390Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 390Instrument Panel Fuse Block(Right) . . . . . . . . . . . . . . . . . . . . . . 393Instrument Panel FuseBlock (Left) . . . . . . . . . . . . . . . . . 395

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Vehicle Care 389
Center High-Mounted
Stoplamp (CHMSL) and
Cargo Lamp
1. Cargo Lamp Bulbs
2. Center High-MountedStoplamp (CHMSL) Bulb
To r e p l a c e o n e o f t h e s e b u l b s :
1. Remove the two screws and liftoff the lamp assembly.
2. Turn the bulb socketcounterclockwise and pull itstraight out.
3. Pull the bulb straight out fromthe socket.
Replacement Bulbs
For replacement bulbs, contact yourdealer.
Electrical System
High Voltage Devices and
Wiring
For an eAssist vehicle, see theSilverado/Sierra eAssistsupplement.
Electrical System
Overload
The vehicle has fuses to protectagainst an electrical systemoverload. Fuses also protect powerdevices in the vehicle.
Replace a bad fuse with a new oneof the identical size and rating.
If there is a problem on the road andafuseneedstobereplaced,thereare some spare fuses and a fusepuller in the Instrument Panel FuseBlock. The same amperage fusecan also be borrowed. Choosesome feature of the vehicle that isnot needed to use and replace it assoon as possible.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
390 Vehicle Care
Headlamp Wiring
An electrical overload may causethe lamps to go on and off, or insome cases to remain off. Have theheadlamp wiring checked right awayif the lamps go on and off orremain off.
Windshield Wipers
If the wiper motor overheats due toheavy snow or ice, the windshieldwipers will stop until the motor coolsand will then restart.
Although the circuit is protectedfrom electrical overload, overloaddue to heavy snow or ice maycause wiper linkage damage.Always clear ice and heavy snowfrom the windshield before using thewindshield wipers.
If the overload is caused by anelectrical problem and not snow orice, be sure to get it fixed.
Fuses
The wiring circuits in the vehicle areprotected from short circuits byfuses. This greatly reduces thechance of fires caused by electricalproblems.
Look at the silver-colored bandinside the fuse. If the band is brokenor melted, replace the fuse. Be sureyou replace a bad fuse with a newone of the identical size and rating.
Fuses of the same amperage canbe temporarily borrowed fromanother fuse location, if a fuse goesout. Replace the fuse as soon asyou can.
Engine Compartment
Fuse Block
If the vehicle has a diesel engine,see the Duramax dieselsupplement.
The engine compartment fuse blockis in the engine compartment, onthe driver side of the vehicle.
Lift the cover to access the fuseblock.
Caution
Spilling liquid on any electrical
component on the vehicle may
damage it. Always keep the
covers on any electrical
component.
Afusepullerisavailableintheleftinstrument panel fuse block.
The vehicle may not be equippedwith all of the fuses, relays, andfeatures shown.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Index 501
General Information (cont'd)
Vehicle Care . . . . . . . . . . . . . . . . . . 351
Glass Replacement . . . . . . . . . . . . . 385
Glove Box . . . . . . . . . . . . . . . . . . . . . . 115
GM Mobility Reimbursement
Program . . . . . . . . . . . . . . . . . . . . . . . 476
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 385
Hazard Warning Flashers . . . . . . . 175
Head Restraints . . . . . . . . . . . . . . . . . 57
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . . . 385
Automatic . . . . . . . . . . . . . . . . . . . . . 174
Bulb Replacement . . . . . . . . . . . . 385
Daytime Running
Lamps (DRL) . . . . . . . . . . . . . . . . 174
Flash-to-Pass . . . . . . . . . . . . . . . . . 174
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 386
High Intensity Discharge
(HID) Lighting . . . . . . . . . . . . . . . 386
High-Beam On Light . . . . . . . . . . 144
High/Low Beam Changer . . . . . 173
Lamps On Reminder . . . . . . . . . 145
Heated
Steering Wheel . . . . . . . . . . . . . . . 121
Heated and Ventilated Front
Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Heated Mirrors . . . . . . . . . . . . . . . . . . . 49
Heater
Engine Coolant . . . . . . . . . . . . . . . 272
Heating and Air
Conditioning . . . . . . . . . . . . . . 237, 238
High Voltage Devices and
Wiring . . . . . . . . . . . . . . . . . . . . . . . . . 389
High-Beam On Light . . . . . . . . . . . . 144
High-Speed Operation . . . . . . . . . . 407
Hill and Mountain Roads . . . . . . . . 256
Hill Descent Control (HDC) . . . . . 297
Hill Descent Control Light . . . . . . . 141
Hill Start Assist (HSA) . . . . . . . . . . 294
Home Page . . . . . . . . . . . . . . . . 186, 188
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . 353
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
How to Wear Safety Belts
Properly . . . . . . . . . . . . . . . . . . . . . . . . 67
Hydraulic Clutch . . . . . . . . . . . . . . . . 366
I
Idle System
Fast . . . . . . . . . . . . . . . . . . . . . . . . . . 271
Ignition Positions . . . . . . . . . . . . . . . 268
Ignition Transmission Lock
Check . . . . . . . . . . . . . . . . . . . . . . . . . 383
Immobilizer . . . . . . . . . . . . . . . . . . . . . . 45
Indicator
Vehicle Ahead . . . . . . . . . . . . . . . . 142
Infants and Young Children,
Restraints . . . . . . . . . . . . . . . . . . . . . . 90
Infotainment . . . . . . . . . . . . . . . . . . . . 181
Infotainment System . . . . . . . . . . . . 485
Instrument Cluster . . . . . . . . . . . . . . 128
Instrument Panel
Storage Area . . . . . . . . . . . . . . . . . .115
Interior Rearview Mirrors . . . . . . . . . 50
Introduction . . . . . . . . . . . . . . . . . . . . . . . 2
J
Jack
Auxiliary . . . . . . . . . . . . . . . . . . . . . . 207
Jump Starting - North
America . . . . . . . . . . . . . . . . . . . . . . . 432
K
Key and Lock Messages . . . . . . . . 153
Keyless Entry
Remote (RKE) System . . . . . . . . . 36
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
L
Labeling, Tire Sidewall . . . . . . . . . . 399
Lamps
Auxiliary Roof
Mounted Lamp . . . . . . . . . . . . . . 176
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . 177

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
508 Index
Ventilation, Air . . . . . . . . . . . . . . . . . . 243
Visors . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Voice Recognition . . . . . . . . . . . . . . 209
Voltage Devices and Wiring . . . . 389
Voltmeter Gauge . . . . . . . . . . . . . . . 134
W
Warning
Brake System Light . . . . . . . . . . . 140
Caution and Danger . . . . . . . . . . . . . 3
Lane Departure (LDW) . . . . . . . 307
Warning Lights, Gauges, and
Indicators . . . . . . . . . . . . . . . . . . . . . 127
Warnings
Hazard Flashers . . . . . . . . . . . . . . 175
Washer Fluid . . . . . . . . . . . . . . . . . . . 375
Messages . . . . . . . . . . . . . . . . . . . . 160
Wheels
Alignment and Tire Balance . . 418
Different Size . . . . . . . . . . . . . . . . . 416
Replacement . . . . . . . . . . . . . . . . . 418
When It Is Time for New
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . 414
Where to Put the Restraint . . . . . . 94
Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . 488
Windows . . . . . . . . . . . . . . . . . . . . . . . . 51
Manual . . . . . . . . . . . . . . . . . . . . . . . . . 51
Power . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Rear . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Windshield
Wiper/Washer . . . . . . . . . . . . . . . . 122
Winter
Driving . . . . . . . . . . . . . . . . . . . . . . . . 257
Winter Tires . . . . . . . . . . . . . . . . . . . . 398
Wiper Blade Replacement . . . . . . 384
Wireless Charging . . . . . . . . . . . . . . 126
Wiring, High Voltage Devices . . . 389