2017 CHEVROLET SILVERADO brakes

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 341
Trailer Brake Control Panel
1. Manual Trailer Brake ApplyLever
2. Trailer Gain AdjustmentButtons
The ITBC system has a controlpanel on the instrument panel to theleft of the steering column. SeeInstrument Panel06.Thecontrolpanel allows adjustment to theamount of output, referred to asTrailer Gain, available to the trailerbrakes and allows manualapplication of the trailer brakes. TheTrailer Brake Control Panel is usedalong with the Trailer Brake Display
Page on the Driver InformationCenter (DIC) to adjust and displaypower output to the trailer brakes.
Trailer Brake DIC Display Page
The ITBC system displaysmessages in the DIC.
The display page indicates TrailerGain setting, power output to thetrailer brakes, trailer connection, andsystem operational status.
To d i s p l a y t h e T r a i l e r B r a k e D i s p l a yPage, do any of the following:
.Scroll through the DIC menupages.
.Press a Trailer Gain button.If the Trailer Brake Display Pageis not currently displayed, pressaTrailerGainbuttontorecallthecurrent Trailer Gain setting.Each press and release of thegain buttons will then change theTrailer Gain setting.
.Activate the Manual TrailerBrake Apply Lever.
TRAILER GAIN: This setting can beadjusted from 0.0 to 10.0 with eitheratrailerconnectedordisconnected.
To a d j u s t t h e T r a i l e r G a i n , p r e s s o n eof the Trailer Gain Adjustmentbuttons. Press and hold a gainbutton to continuously adjust theTrailer Gain. To turn the output tothe trailer off, adjust the Trailer Gainsetting to 0.0 (zero).
TRAILER OUTPUT: This displaysanytime a trailer with electric brakesis connected. Output to the trailerbrakes is based on the amount ofvehicle braking present and relativeto the Trailer Gain setting. Output isdisplayed from 0 to 100% for eachgain setting.
The Trailer Output will indicate“------”on the Trailer BrakeDisplay Page whenever thefollowing occur:
.No trailer is connected.
.Atrailerwithoutelectricbrakesis connected (no DIC messagewill display).
.Atrailerwithelectricbrakeshasbecome disconnected (aCHECK TRAILER WIRINGmessage will also display onthe DIC).

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
342 Driving and Operating
.There is a fault present in thewiring to the trailer brakes (aCHECK TRAILER WIRINGmessage will also display onthe DIC).
.The ITBC system is not workingdue to a fault (a SERVICETRAILER BRAKE SYSTEMmessage will also display inthe DIC).
Manual Trailer Brake Apply
The Manual Trailer Brake ApplyLever is used to apply the trailer’selectric brakes independent of thevehicle’sbrakes.Slidingthelevertothe left will apply only the trailerbrakes. Use this lever to adjustTrailer Gain to properly adjust thepower output to the trailer brakes.
The trailer's and the vehicle's brakelamps will come on when eithervehicle brakes or manual trailerbrakes are applied.
Trailer Gain Adjustment Procedure
Trailer Gain should be set for aspecific trailering condition and mustbe adjusted anytime vehicle loading,trailer loading, or road surfaceconditions change.
{Warning
Trailer brakes that are
over-gained or under-gained may
not stop the vehicle and the trailer
as intended and can result in a
crash. Always follow the
instructions to set the Trailer Gain
for the proper trailer stopping
performance.
Use the following to adjust TrailerGain for each towing condition:
1. Drive the vehicle with the trailerattached on a level roadsurface representative of thetowing condition and free oftraffic at about 32 to 40 km/h(20 to 25 mph) and fully applythe Manual Trailer Brake ApplyLever.
Adjusting Trailer Gain atspeeds lower than 32 to40 km/h (20 to 25 mph) mayresult in an incorrect gainsetting.
2. Adjust the Trailer Gain, usingthe Trailer Gain AdjustmentButtons, to just below the pointof trailer wheel lock-up,indicated by trailer wheelsqueal or tire smoke when atrailer wheel locks.
Trailer wheel lock-up may notoccur if towing a heavily loadedtrailer. In this case, adjust theTrailer Gain to the highestallowable setting for the towingcondition.
3. Readjust Trailer Gain anytimevehicle loading, trailer loading,or road surface conditionschange or if trailer wheellock-up is noticed at any timewhile towing.

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
344 Driving and Operating
AGMdealermaybeabletodiagnose and repair problems withthe trailer. However, any diagnosisand repair of the trailer is notcovered under the vehicle warranty.Contact your trailer dealer forassistance with trailer repairs andtrailer warranty information.
Trailer Sway
Control (TSC)
Vehicles with StabiliTrak have aTrailer Sway Control (TSC) feature.Trailer sway is unintendedside-to-side motion of a trailer whilebeing towed. If the vehicle is towingatrailerandtheTSCdetectsthatsway is increasing, the vehiclebrakes are selectively applied ateach wheel, to help reduceexcessive trailer sway. If the vehicleis equipped with the IntegratedTrailer Brake Control (ITBC) system,and the trailer has the electricactuated brake system, StabiliTrakmay also apply the trailer brakes.
If TSC is enabled, the TractionControl System (TCS)/StabiliTrakwarning light will flash on theinstrument cluster. Vehicle speedmust be reduced. If trailer swaycontinues, StabiliTrak can reduceengine torque to help slow thevehicle. SeeTr a c t i o n C o n t r o l /Electronic Stability Control0295.
{Warning
Even if the vehicle is equipped
with TSC, trailer sway could result
in loss of control and the vehicle
could crash. If excessive trailer
sway is detected, slow down to a
safe speed. Check the trailer and
vehicle to help correct possible
causes. These could include an
improperly or overloaded trailer,
unrestrained cargo, improper
(Continued)
Warning (Continued)
trailer hitch configuration,
excessive vehicle-trailer speed,
or improperly inflated or incorrect
vehicle or trailer tires. SeeTo w i n g
Equipment0335for trailer ratings
and hitch setup
recommendations.
Adding non-dealer accessories canaffect the vehicle performance.SeeAccessories andModifications0352.

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
352 Vehicle Care
cause cancer and birth defects orother reproductive harm. Engineexhaust, many parts and systems,many fluids, and some componentwear by-products contain and/oremit these chemicals.
SeeBattery - North America0378andJump Starting - NorthAmerica0432.
California Perchlorate
Materials Requirements
Certain types of automotiveapplications, such as airbaginitiators, safety belt pretensioners,and lithium batteries contained inRemote Keyless Entry transmitters,may contain perchlorate materials.Special handling may be necessary.For additional information, seewww.dtsc.ca.gov/hazardouswaste/perchlorate.
Accessories and
Modifications
Adding non-dealer accessories ormaking modifications to the vehiclecan affect vehicle performance andsafety, including such things asairbags, braking, stability, ride andhandling, emissions systems,aerodynamics, durability, andelectronic systems like antilockbrakes, traction control, and stabilitycontrol. These accessories ormodifications could even causemalfunction or damage not coveredby the vehicle warranty.
Damage to suspension componentscaused by modifying vehicle heightoutside of factory settings will not becovered by the vehicle warranty.
Damage to vehicle componentsresulting from modifications or theinstallation or use of non-GMcertified parts, including controlmodule or software modifications, isnot covered under the terms of thevehicle warranty and may affectremaining warranty coverage foraffected parts.
GM Accessories are designed tocomplement and function with othersystems on the vehicle. See yourdealer to accessorize the vehicleusing genuine GM Accessoriesinstalled by a dealer technician.
Also, seeAdding Equipment to theAirbag-Equipped Vehicle087.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
376 Vehicle Care
Adding Washer Fluid
The vehicle has a low washer fluidmessage on the DIC that comes onwhen the washer fluid is low. Themessage is displayed for15 seconds at the start of eachignition cycle. When the WASHERFLUID LOW ADD FLUID messagedisplays, washer fluid will need tobe added to the windshield washerfluid reservoir.
Open the cap with the washersymbol on it. Add washer fluid untilthe tank is full. SeeEngineCompartment Overview0354forreservoir location.
Caution
.Do not use washer fluid thatcontains any type of waterrepellent coating. This cancause the wiper blades tochatter or skip.
.Do not use engine coolant(antifreeze) in thewindshield washer. It candamage the windshieldwasher system and paint.
.Do not mix water withready-to-use washer fluid.Water can cause thesolution to freeze anddamage the washer fluidtank and other parts of thewasher system.
.When using concentratedwasher fluid, follow themanufacturer instructions foradding water.
.Fill the washer fluid tankonly three-quarters full whenit is very cold. This allowsfor fluid expansion if
(Continued)
Caution (Continued)
freezing occurs, which coulddamage the tank if it iscompletely full.
Brakes
Disc brake pads have built-in wearindicators that make a high-pitchedwarning sound when the brake padsare worn and new pads are needed.The sound can come and go or beheard all the time the vehicle ismoving, except when applying thebrake pedal firmly.
{Warning
The brake wear warning sound
means that soon the brakes will
not work well. That could lead to
acrash.Whenthebrakewear
warning sound is heard, have the
vehicle serviced.