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Climate Controls 243
Some vehicles may have theexterior temperature sensor in thepassenger side mirror instead of thefront grille area.
The climate control system uses theinformation from these sensors tomaintain comfort settings byadjusting the outlet temperature, fanspeed, and the air delivery mode.The system may also supply coolerair to the side of the vehicle facingthe sun. The recirculation mode willalso be used as needed to maintaincool outlet temperatures.
Air Vents
Use the air vents in the center andon the side of the instrument panelto direct airflow. Use thethumbwheels near the air vents toopen or close off the airflow.
Air vents blow warm air on the sidewindows in cold weather. If Floor,Defog, or Defrost modes areselected, a small amount of air willcome from the vents close to thewindow. If the airflow is shut offusing the thumbwheels, warm airwill be directed to the otherinstrument panel vents. This isnormal operation.
Use the thumbwheels to turn ventairflow on or off based on the modeselected.
Operation Tips
.Clear away any ice, snow,or leaves from air inlets at thebase of the windshield that couldblock the flow of air into thevehicle.
.Keep the path under the frontseats clear of objects to helpcirculate the air inside of thevehicle more effectively.
.Use of non-GM approved hooddeflectors can adversely affectthe performance of the system.Check with your dealer beforeadding equipment to the outsideof the vehicle.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
244 Climate Controls
Maintenance
Passenger Compartment
Air Filter
The filter reduces the dust, pollen,and other airborne irritants fromoutside air that is pulled into thevehicle.
The filter should be replaced as partof routine scheduled maintenance.SeeMaintenance Schedule0452.To f i n d o u t w h a t t y p e o f f i l t e r t o u s e ,seeMaintenance ReplacementParts0464.
1. Open the lower glove box doorcompletely.
2. Remove the four screws fromaround the lower glove box.The door does not need to beremoved to access the screws.
3. Close the lower glove box doorand pull it from its frame toremove the entire unit.
4. Release the two tabs holdingthe service door. Open theservice door and remove theold filter.
5. Install the new air filter.
6. Close the service door andsecure the tabs.
7. Reverse the steps to reinstallthe glove box.
See your dealer if additionalassistance is needed.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Climate Controls 245
Service
All vehicles have a label underhoodthat identifies the refrigerant used inthe vehicle. The refrigerant systemshould only be serviced by trainedand certified technicians. The airconditioning evaporator shouldnever be repaired or replaced byone from a salvage vehicle.It should only be replaced by a newevaporator to ensure proper andsafe operation.
During service, all refrigerantsshould be reclaimed with properequipment. Venting refrigerantsdirectly to the atmosphere is harmfulto the environment and may alsocreate unsafe conditions based oninhalation, combustion, frostbite,or other health-based concerns.

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Driving and Operating 247
Fuel Additives . . . . . . . . . . . . . . . . 312E85 or FlexFuel . . . . . . . . . . . . . . 312Filling the Tank . . . . . . . . . . . . . . . 313Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 315
Trailer Towing
General TowingInformation . . . . . . . . . . . . . . . . . . 315Driving Characteristics andTo w i n g T i p s . . . . . . . . . . . . . . . . . 3 1 5Trailer Towing . . . . . . . . . . . . . . . . 318To w i n g E q u i p m e n t . . . . . . . . . . . . 3 3 5Trailer Sway Control (TSC) . . . 344
Conversions and Add-Ons
Add-On ElectricalEquipment . . . . . . . . . . . . . . . . . . 345Adding a Snow Plow or SimilarEquipment . . . . . . . . . . . . . . . . . . 345Pickup Conversion toChassis Cab . . . . . . . . . . . . . . . . 349
Driving Information
Distracted Driving
Distraction comes in many formsand can take your focus from thetask of driving. Exercise goodjudgment and do not let otheractivities divert your attention awayfrom the road. Many localgovernments have enacted lawsregarding driver distraction. Becomefamiliar with the local laws inyour area.
To a v o i d d i s t r a c t e d d r i v i n g , k e e pyour eyes on the road, keep yourhands on the steering wheel, andfocus your attention on driving.
.Do not use a phone indemanding driving situations.Use a hands-free method toplace or receive necessaryphone calls.
.Watch the road. Do not read,take notes, or look upinformation on phones or otherelectronic devices.
.Designate a front seatpassenger to handle potentialdistractions.
.Become familiar with vehiclefeatures before driving, such asprogramming favorite radiostations and adjusting climatecontrol and seat settings.Program all trip information intoany navigation device prior todriving.
.Wait until the vehicle is parkedto retrieve items that have fallento the floor.
.Stop or park the vehicle to tendto children.
.Keep pets in an appropriatecarrier or restraint.
.Avoid stressful conversationswhile driving, whether with apassenger or on a cell phone.
{Warning
Ta k i n g y o u r e y e s o f f t h e r o a d t o o
long or too often could cause a
crash resulting in injury or death.
Focus your attention on driving.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
258 Driving and Operating
{Warning
Snow can trap engine exhaust
under the vehicle. This may
cause exhaust gases to get
inside. Engine exhaust contains
carbon monoxide (CO), which
cannot be seen or smelled. It can
cause unconsciousness and even
death.
If the vehicle is stuck in snow:
.Clear snow from the base ofthe vehicle, especially anyblocking the exhaust pipe.
.Open a window about 5 cm(2 in) on the vehicle sidethat is away from the wind,to bring in fresh air.
.Fully open the air outlets onor under the instrumentpanel.
.Adjust the climate controlsystem to circulate the airinside the vehicle and set
(Continued)
Warning (Continued)
the fan speed to the highestsetting. See“ClimateControl Systems.”
For more information about CO,
seeEngine Exhaust0276.
To s a v e f u e l , r u n t h e e n g i n e f o rshort periods to warm the vehicleand then shut the engine off andpartially close the window. Movingabout to keep warm also helps.
If it takes time for help to arrive,when running the engine, push theaccelerator pedal slightly so theengine runs faster than the idlespeed. This keeps the batterycharged to restart the vehicle and tosignal for help with the headlamps.Do this as little as possible, tosave fuel.
If the Vehicle Is Stuck
Slowly and cautiously spin thewheels to free the vehicle whenstuck in sand, mud, ice, or snow.See“Rocking the Vehicle to Get ItOut”later in this section.
The Traction Control System (TCS)can often help to free a stuckvehicle. SeeTr a c t i o n C o n t r o l /Electronic Stability Control0295.If TCS cannot free the vehicle, see“Rocking the Vehicle to Get it Out”following.
{Warning
If the vehicle's tires spin at high
speed, they can explode, and you
or others could be injured. The
vehicle can overheat, causing an
engine compartment fire or other
damage. Spin the wheels as little
as possible and avoid going
above 56 km/h (35 mph).
For information about using tirechains on the vehicle, seeTireChains0419.

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
268 Driving and Operating
The switch used to adjust thepedals is on the center stack, belowthe climate controls.
Lift the switch up to move thepedals closer to your body. Pressthe switch down to move thepedals away.
Before you start driving, fully pressthe brake pedal to confirm theadjustment is right for you.
The vehicle may have a memoryfunction, which lets pedal settingsbe saved and recalled. SeeMemorySeats061.
Ignition Positions
The ignition switch has four differentpositions.
To s h i f t o u t o f P ( P a r k ) , t h e i g n i t i o nmust be in ON/RUN or ACC/ACCESSORY and the regular brakepedal must be applied.
0(STOPPINGTHEENGINE/LOCK/OFF) :When the vehicle is stopped,turn the ignition switch to LOCK/OFF to turn the engine off. RetainedAccessory Power (RAP) will remainactive. SeeRetained AccessoryPower (RAP)0271.
This position locks the ignition andsteering wheel. It also locks thetransmission on automatictransmission vehicles. The key canbe removed in LOCK/OFF.
The steering can bind with thewheels turned off center. If thishappens, move the steering wheelfrom right to left while turning thekey to ACC/ACCESSORY. If thisdoes not work, then the vehicleneeds service.
Do not turn the engine off when thevehicle is moving. This will cause aloss of power assist in the brakeand steering systems and disablethe airbags.
If the vehicle must be shut off in anemergency:
1. Brake using a firm and steadypressure. Do not pump thebrakes repeatedly. This maydeplete power assist, requiringincreased brake pedal force.
2. Shift the vehicle to N (Neutral).This can be done while thevehicle is moving. After shiftingto N (Neutral), continue to

Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-9956065) - 2017 - CRC - 4/29/16
Driving and Operating 297
appropriate message will display inthe DIC. SeeRide Control SystemMessages0154.
To t u r n T C S a n d S t a b i l i T r a k o n
again, press and releaseg.The
traction off lightiand the
StabiliTrak OFF lightgin the
instrument cluster turn off.
StabiliTrak will automatically turn onif the vehicle exceeds 56 km/h(35 mph). Traction control willremain off.
The vehicle has a Trailer SwayControl (TSC) feature and a HillStart Assist (HSA) feature. SeeTr a i l e r S w a y C o n t r o l ( T S C )0344orHill Start Assist (HSA)0294.
Adding accessories can affect thevehicle performance. SeeAccessories andModifications0352.
Hill Descent
Control (HDC)
If equipped, HDC can be used whendriving downhill. It sets andmaintains vehicle speed whiledescending a very steep incline in aforward or reverse gear.
The HDC switch is on the centerstack, below the climate controls.
Press5to enable or disable HDC.
Vehicle speed must be below50 km/h (31 mph).
The HDC light displays on theinstrument cluster when enabled.
HDC can maintain vehicle speedsbetween 3 and 22 km/h (2 and14 mph) on an incline greater thanor equal to a 10% grade. A blinkingHDC light indicates the system isactively applying the brakes tomaintain vehicle speed.
When HDC is activated, the initialHDC speed is set to the currentdriving speed. It can be increased ordecreased by pressing the +RES orSET- steering wheel controls or byapplying the accelerator or brakepedal. This adjusted speedbecomes the new set speed.
HDC will remain enabled between22 and 60 km/h (14 and 37 mph);however vehicle speed cannot beset or maintained in this range.It will automatically disable if thevehicle speed is above 80 km/h(50 mph) or above 60 km/h
(37 mph) for at least 30 seconds.5
must be pressed again tore-enable HDC.

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.