ECO mode CHEVROLET SILVERADO 2017 3.G Service Manual

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 291
If the transmission is in gear and/ormoving more than 5 km/h (3 mph),
the 4nindicator light will flash for
30 seconds and not complete theshift. After 30 seconds the transfer
case will shift to 4m.Turntheknob
to 4mto display the indicator. With
the vehicle moving less than 5 km/h(3 mph), and the transmission inN(Neutral), attempt the shift again.
Shifting Out of 4n
To s h i f t :
1. The vehicle must be stopped ormoving less than 5 km/h(3 mph) with the transmissionin N (Neutral) and the ignition inON/RUN. It is best for thevehicle to be moving1.6 to 3.2 km/h (1 to 2 mph).
2. Turn the knob to 4m,AUTO,
or 2m.Waitforthe4m,AUTO,
or 2mindicator light to stop
flashing before shifting thetransmission into gear.
Caution
Shifting the transmission into gear
before the requested mode
indicator light has stopped
flashing could damage the
transfer case.
If the transmission is in gear and/ormoving more than 5 km/h (3 mph),
the 4m,AUTO,or2mindicator light
will flash for 30 seconds but will notcomplete the shift. With the vehiclemoving less than 5 km/h (3 mph),and the transmission in N (Neutral),attempt the shift again.
Shifting Into N (Neutral)
To s h i f t i n t o N ( N e u t r a l ) :
1. Park the vehicle on a levelsurface.
2. Set the parking brake andpress and hold the brakepedal. SeeParkingBrake0293.
3. Start the vehicle or turn theignition to ON/RUN.
4. Shift the transmission toN(Neutral).
5. Shift the transfer case to 2m.
6. Turn the transfer case knobclockwise to N (Neutral) until itstops and hold it there until theN(Neutral) light starts blinking.This will take at least10 seconds. Then slowly
release the dial to the 4n
position. The N (Neutral) lightwill come on when the transfercase shift to N (Neutral) iscomplete.
7. With the engine running, verifythat the transfer case is inN(Neutral) by shifting thetransmission to R (Reverse),then shift the transmission toD(Drive). There should be nomovement of the vehicle whileshifting the transmission.
8. Turn the engine off, and theignition to ACC/ACCESSORY.
9. Place the transmission shiftlever in P (Park). SeeRecreational VehicleTo w i n g0437.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
298 Driving and Operating
When enabled, if the vehicle is at aspeed above 22 km/h (14 mph) andless than 60 km/h (37 mph), a DICmessage will display. SeeVehicleSpeed Messages0160.
Locking Rear Axle
Vehicles with a locking rear axle cangive more traction on snow, mud,ice, sand, or gravel. It works like astandard axle most of the time, butwhen traction is low, this feature willallow the rear wheel with the mosttraction to move the vehicle.
Cruise Control
{Warning
Cruise control can be dangerous
where you cannot drive safely at
asteadyspeed.Donotuse
cruise control on winding roads or
in heavy traffic.
Cruise control can be dangerous
on slippery roads. On such roads,
fast changes in tire traction can
cause excessive wheel slip, and
you could lose control. Do not use
cruise control on slippery roads.
With cruise control a speed of about40 km/h (25 mph) or more can bemaintained without keeping yourfoot on the accelerator. Cruisecontrol does not work at speedsbelow about 40 km/h (25 mph).
If equipped with an Allison orHydra-Matic 6-speed automatictransmission, see“To w / H a u l M o d eGrade Braking”underTo w / H a u lMode0282for an explanation of
how cruise control interacts with theRange Selection Mode, Tow/HaulMode, and Grade Braking systems.
If the cruise control is being usedand the Traction Control system(TCS) or StabiliTrak begins to limitwheel spin, the cruise control willautomatically disengage. SeeTr a c t i o n C o n t r o l / E l e c t r o n i c S t a b i l i t yControl0295.Whenroadconditions allow you to safely use itagain, cruise control can be turnedback on.
If the brakes are applied, cruisecontrol disengages.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
300 Driving and Operating
Passing Another Vehicle WhileUsing Cruise Control
Use the accelerator pedal toincrease the vehicle speed. Whenyou take your foot off the pedal, thevehicle will slow down to theprevious set cruise speed. Whilepressing the accelerator pedal orshortly following the release tooverride cruise control, brieflypressing SET–will result in cruisecontrol set to the current vehiclespeed.
Using Cruise Control on Hills
How well the cruise control workson hills depends on the vehiclespeed, the load, and the steepnessof the hills. When going up steephills, pressing the accelerator pedalmay be necessary to maintainvehicle speed.
While going downhill:
.Vehicles with a 6-speedautomatic transmission and agasoline engine have CruiseGrade Braking to help maintaindriver selected speed.
Cruise Grade Braking is enabledwhen the vehicle is started andcruise control is active. It is notenabled in Range SelectionMode. It assists in maintainingdriver selected speed whendriving on downhill grades byusing the engine andtransmission to slow the vehicle.
To d i s a b l e a n d e n a b l e C r u i s eGrade Braking for the currentignition key cycle, press andhold the Tow/Haul button forfive seconds. A DIC messagedisplays. SeeTr a n s m i s s i o nMessages0157.
.Vehicles with a diesel enginehave Cruise Grade Brakingenabled when Tow/Haul Mode ison, the exhaust brake is on,or both are on.
For other forms of descent control,seeHill Descent Control (HDC)0297,Automatic Transmission0277,andTo w / H a u l M o d e0282.
Ending Cruise Control
There are four ways to end cruisecontrol:
.Step lightly on the brake pedal.
.Press*.
.Shift the transmission toN(Neutral).
.To t u r n o f f c r u i s e c o n t r o l ,
press5.
Erasing Speed Memory
The cruise control set speed is
erased from memory if5is pressed
or the ignition is turned off.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
306 Driving and Operating
or Off. The first button press showsthe current setting on the DIC.Additional button presses willchange this setting. The chosensetting will remain until it is changedand will affect the timing of both theCollision Alert and the TailgatingAlert features. The timing of bothalerts will vary based on vehiclespeed. The faster the vehicle speed,the farther away the alert will occur.Consider traffic and weatherconditions when selecting the alerttiming. The range of selectable alerttiming may not be appropriate for alldrivers and driving conditions.
Unnecessary Alerts
FCA may provide unnecessaryalerts for turning vehicles, vehiclesin other lanes, objects that are notvehicles, or shadows. These alertsare normal operation and thevehicle does not need service.
Cleaning the System
If the FCA system does not seem tooperate properly, cleaning theoutside of the windshield in front ofthe rearview mirror, and cleaning the
front of the vehicle where radarsensors are located, may correctthe issue.
Forward Automatic
Braking (FAB)
If the vehicle has Forward CollisionAlert (FCA), it also has FAB, whichincludes Intelligent BrakeAssist (IBA). When the systemdetects a vehicle ahead in your paththat is traveling in the samedirection that you may be about tocrash into, it can provide a boost tobraking or automatically brake thevehicle. This can help avoid orlessen the severity of crashes whendriving in a forward gear. Dependingon the situation, the vehicle mayautomatically brake moderately orhard. This forward automaticbraking can only occur if a vehicle isdetected. This is shown by the FCAvehicle ahead indicator being lit.SeeForward Collision Alert (FCA)System0304.
The system works when driving in aforward gear between 8 km/h(5 mph) and 80 km/h (37 mph).It can detect vehicles up toapproximately 60 m (197 ft).
{Warning
FA B i s a n e m e r g e n c y c r a s h
preparation feature and is not
designed to avoid crashes. Do
not rely on FAB to brake the
vehicle. FAB will not brake
outside of its operating speed
range and only responds to
detected vehicles.
FA B m a y n o t :
.Detect a vehicle ahead onwinding or hilly roads.
.Detect all vehicles,especially vehicles with atrailer, tractors, muddyvehicles, etc.
.Detect a vehicle whenweather limits visibility, suchas in fog, rain, or snow.
(Continued)

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
314 Driving and Operating
Warning (Continued)
.Fuel can spray out if therefueling nozzle is insertedtoo quickly. This spray canhappen if the tank is nearlyfull, and is more likely in hotweather. Insert the refuelingnozzle slowly and wait forany hiss noise to stop priorto beginning to flow fuel.
The vehicle has a capless refuelingsystem and does not have a fuelcap. The filling nozzle must be fullyinserted and latched prior to startingfuel flow.
{Warning
Overfilling the fuel tank by more
than three clicks of a standard fill
nozzle may cause:
.Vehicle performance issues,including engine stalling anddamage to the fuel system.
.Fuel spills.
.Potential fuel fires.
Be careful not to spill fuel. Wait afew seconds after you have finishedpumping before removing thenozzle. Clean fuel from paintedsurfaces as soon as possible. SeeExterior Care0441.
{Warning
If a fire starts while you are
refueling, do not remove the
nozzle. Shut off the flow of fuel by
shutting off the pump or by
notifying the station attendant.
Leave the area immediately.
For models with dual fuel tanks, thefuel gauge shows an average ofboth tanks. The rear tank is emptiedfirst. When refueling, refuel the fronttank first, then add fuel to therear tank.
Filling the Tank With a PortableGas Can
If the vehicle runs out of fuel andmust be filled from a portablegas can:
1. Locate the capless funneladapter from inside the vehicle.
2. Insert and latch the funnel intothe capless fuel system.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
316 Driving and Operating
.The trailer must be equippedwith brakes adequate for theintended use. A loaded trailerweighing more than 900 kg(2,000 lb) must be equipped withits own brake system, withbrakes working on all axles.Trailer braking equipmentconforming to CanadianStandards Association (CSA)requirement CAN3-D313, or itsequivalent, is recommended.
.Do not tow a trailer during thefirst 800 km (500 mi) to preventdamage to the engine, axle,or other parts.
.Then during the first 800 km(500 mi) of trailer towing, do notdrive over 80 km/h (50 mph) anddo not make starts at full throttle.
.Vehicles can tow in D (Drive).The Tow/Haul Mode may beused if the transmission shiftstoo often. SeeTo w / H a u lMode0282.
.Turn off Park Assist whentowing.
{Warning
When towing a trailer, exhaust
gases may collect at the rear of
the vehicle and enter if the
liftgate, trunk/hatch, or rear-most
window is open.
When towing a trailer:
.Do not drive with theliftgate, trunk/hatch,or rear-most window open.
.Fully open the air outlets onor under the instrumentpanel.
.Also adjust the climatecontrol system to a settingthat brings in only outsideair. See“Climate ControlSystems”in the Index.
For more information about
carbon monoxide, seeEngine
Exhaust0276.
To w i n g a t r a i l e r r e q u i r e s a c e r t a i namount of experience. Thecombination you are driving islonger and not as responsive as the
vehicle itself. Get acquainted withthe handling and braking of the rigbefore setting out for the open road.
The structure, tires, and brakes ofthe trailer must be rated to carry theload. Inadequate trailer equipmentcan cause the combination tooperate in an unexpected or unsafemanner.
Before starting, check all trailer hitchparts and attachments, safetychains, electrical connectors, lamps,tires, and mirrors. Get familiar withthe handling and braking of the rig.If the trailer has electric brakes, startthe combination moving and thenapply the trailer brake controller byhand to be sure the brakes work.
During the trip, check occasionallyto be sure that the load is secureand the lamps and any trailerbrakes still work.
Following Distance
Stay at least twice as far behind thevehicle ahead as you would whendriving the vehicle without a trailer.This can help to avoid heavybraking and sudden turns.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 317
Passing
More passing distance is neededwhen towing a trailer. Thecombination will not accelerate asquickly and is longer so it isnecessary to go much fartherbeyond the passed vehicle beforereturning to the lane.
Backing Up
Hold the bottom of the steeringwheel with one hand. To move thetrailer to the left, move that hand tothe left. To move the trailer to theright, move your hand to the right.Always back up slowly and,if possible, have someoneguide you.
Making Turns
Caution
Making very sharp turns while
trailering could cause the trailer to
come in contact with the vehicle.
The vehicle could be damaged.
Avoid making very sharp turns
while trailering.
When turning with a trailer, makewider turns than normal. Do this sothe trailer will not strike softshoulders, curbs, road signs, trees,or other objects. Avoid jerky orsudden maneuvers. Signal well inadvance.
If the trailer turn signal bulbs burnout, the arrows on the instrumentcluster will still flash for turns. It isimportant to check occasionally tobe sure the trailer bulbs are stillworking.
Driving on Grades
Reduce speed and shift to a lowergearbeforestarting down a long orsteep downgrade. If thetransmission is not shifted down, thebrakes might get hot and no longerwork well.
Vehicles can tow in D (Drive). Shiftthe transmission to a lower gear ifthe transmission shifts too oftenunder heavy loads and/or hillyconditions.
The Tow/Haul Mode may be used ifthe transmission shifts too often.SeeTo w / H a u l M o d e0282.
When towing at high altitude onsteep uphill grades, consider thefollowing: Engine coolant will boil atalowertemperaturethanatnormalaltitudes. If the engine is turned offimmediately after towing at highaltitude on steep uphill grades, thevehicle may show signs similar toengine overheating. To avoid this,let the engine run while parked,preferably on level ground, with thetransmission in P (Park) for a fewminutes before turning the engineoff. If the overheat warning comeson, seeEngine Overheating0372.
Parking on Hills
{Warning
Parking the vehicle on a hill with
the trailer attached can be
dangerous. If something goes
wrong, the rig could start to move.
People can be injured, and both
the vehicle and the trailer can be
damaged. When possible, always
park the rig on a flat surface.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 319
Caution (Continued)
vehicle warranty. To pull a trailer
correctly, follow the advice in this
section and see your dealer for
important information about
towing a trailer with the vehicle.
SeeVehicle Load Limits0259formore information about the vehicle'smaximum load capacity.
To i d e n t i f y t h e t r a i l e r i n g c a p a c i t y o fthe vehicle, read the information in“Weight of the Trailer”later in thissection.
Trailering is different than justdriving the vehicle by itself.Trailering means changes inhandling, acceleration, braking,durability, and fuel economy.Successful, safe trailering takescorrect equipment, and it has to beused properly.
The following information has manytime-tested, important trailering tipsand safety rules. Many of these are
important for your safety and that ofyour passengers. Read this sectioncarefully before pulling a trailer.
Weight of the Trailer
Safe trailering requires monitoringthe weight, speed, altitude, roadgrades, outside temperature, andhow frequently the vehicle is used topull a trailer. Take into considerationany special equipment on thevehicle, and the amount of tongueweight the vehicle can carry. See“Weight of the Trailer Tongue”laterin this section for more information.
Trailer weight rating (TWR) forpickup models is calculatedassuming the tow vehicle has thedriver, a front seat passenger, andall required trailering equipment.Weight of additional optionalequipment, passengers, and cargoin the tow vehicle must besubtracted from the trailer weightrating.
Ask your dealer for traileringinformation or advice.
For kingpin weight and trailertongue weight information, see“Weight of the Trailer Tongue”laterin this section.
Use the following chart to determinehow much the vehicle can weigh,based upon the vehicle model andoptions.
Weights listed apply forconventional trailers andgooseneck/fifth-wheel trailers unlessotherwise noted.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
336 Driving and Operating
Vehicle SeriesTr a i l e r W e ig h tWeight-Distributing HitchUsageHitch Distribution
1500Up to 3 175 kg (7,000 lb)OptionalRefer to trailermanufacturer’srecommendation
1500Over 3 175 kg (7,000 lb)Required50%
2500/3500Up to 9 080 kg (20,000 lb)OptionalRefer to trailermanufacturer’srecommendation
1. Front of Vehicle
2. Body to Ground Distance
When using a weight-distributinghitch, measure distance (2) beforecoupling the trailer to the hitch ball.Measure the height again after thetrailer is coupled and adjust thespring bars so the distance (2) is asclose as possible to halfwaybetween the two measurements.
Fifth-Wheel and Gooseneck
Trailering
Fifth-wheel and gooseneck trailerscan be used with many pickupmodels. These trailers place alarger percentage of the weight(kingpin weight) on the tow vehicle
than conventional trailers. Makesure this weight does not cause thevehicle to exceed GAWR or GVWR.
Fifth-wheel or gooseneck kingpinweight should be 15 to 25% of thetrailer weight up to the maximumamount specified in the traileringchart for the vehicle. See“Weight ofthe Trailer”underTr a i l e rTo w i n g0318.
The hitch should be located in thepickup bed so that its centerline isover or slightly in front of the rearaxle. Take care that it is not so farforward that it will contact the backof the cab in sharp turns. This isespecially important for short box

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 5/6/16
338 Driving and Operating
Use only a round, seven-wireconnector with flat blade terminalsmeeting SAE J2863 specificationsfor proper electrical connectivity.
For vehicles not equipped withheavy-duty trailering, the harness issecured to the vehicle's framebehind the spare tire mount. Theharness requires the installation of atrailer connector, which is availablethrough your dealer.
Heavy-Duty Trailer Wiring HarnessPackage
For vehicles equipped withheavy-duty trailering, the harnessconnector is mounted in the bumper.
For vehicles with the fifth wheel/gooseneck trailer package, theharness connector is mounted onthe inside of the pickup bed behindthe rear wheel.
The seven-wire harness containsthe following trailer circuits:
.Green/Violet: Right Stop/TurnSignal
.Ye l l o w / G r a y : L e f t S t o p / T u r nSignal
.Gray/Brown: Taillamps/ParkingLamps
.White: Ground
.White/Green: Back-up Lamps
.Red/Green: Battery Feed
.Dark Blue: Trailer Brake
To h e l p c h a r g e a r e m o t e(non-vehicle) battery, press the Tow/Haul Mode button at the end of theshift lever. If the trailer is too light forTo w / H a u l M o d e , t u r n o n t h eheadlamps to help charge thebattery.
Camper/Fifth-Wheel Trailer WiringPackage
For vehicles without the fifth wheel/gooseneck tralier package,seven-wire camper harness is underthe rear bumper, attached to theframe near the rear crossmember.Aconnectormustbeaddedtothewiring harness that connects to thecamper.
The harness contains the followingcamper/trailer circuits:
.Green/Violet: Right Stop/TurnSignal
.Ye l l o w / G r a y : L e f t S t o p / T u r nSignal
.Gray/Brown: Taillamps/ParkingLamps