roof CHEVROLET SILVERADO 1500 2014 Owner's Manual
[x] Cancel search | Manufacturer: CHEVROLET, Model Year: 2014, Model line: SILVERADO 1500, Model: CHEVROLET SILVERADO 1500 2014Pages: 542, PDF Size: 7.09 MB
Page 198 of 542

Black plate (6,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/28/13
6-6 Lighting
When the headlamps are changed
to high beam, the fog lamps go off.
When the high-beam headlamps are
turned off, the fog lamps will come
on again.
Some localities have laws that
require the headlamps to be on with
the fog lamps.
Auxiliary
Roof-Mounted Lamp
If equipped, this button includes
wiring provisions for a dealer or a
qualified service center to install an
auxiliary roof lamp.
This button is on the overhead
console.When the wiring is connected to an
auxiliary roof-mounted lamp,
pressing the bottom of the button
will activate the lamp and illuminate
an indicator light at the bottom of
this button. Pressing the top of the
button will turn off the roof-mounted
lamp and indicator.
The emergency roof lamp circuit is
fused at 30 amps, so the total
current draw of the attached lamps
should be less than this value. The
attachment points for the roof lamp
circuits are two blunt cut wires
above the overhead console: a dark
green with blue stripe switched
power wire and a black ground wire.
For more information on
roof-mounted emergency lamp
installation, see the GM Upfitter
website at www.gmupfitter.com or
contact your dealer.
If the vehicle has this button, the
vehicle may have the snow plow
prep package. See
Adding a Snow
Plow or Similar Equipment on
page 9-99.
Interior Lighting
Instrument Panel
Illumination Control
This feature controls the brightness
of the steering wheel and instrument
panel lights. The instrument panel
illumination control is next to the
exterior lamp control.
D(Instrument Panel
Illumination): Move the
thumbwheel up or down to brighten
or dim the lights.
Page 214 of 542

Black plate (12,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/28/13
7-12 Infotainment System
Fixed Mast Antenna
The fixed mast antenna will go
through most car washes as long as
it is securely attached. If the
antenna becomes slightly bent,
straighten it out by hand. If it is
badly bent, replace it.
Occasionally check that the antenna
is tight at the base. If tightening is
required, protect the paint from
damage.
Multi-Band Antenna
The roof antenna is for OnStar®,
SiriusXM®Satellite Radio, and GPS
(Global Positioning System), if the
vehicle has these features. Keep
clear of obstructions for clear
reception. If the vehicle has a
sunroof, and it is open, reception
can also be affected.
Pandora Internet Radio
If equipped, Pandora®is a free
Internet radio service that streams
personalized radio stations based
on artists, tracks, genres, and
comedians. Create stations using
the Pandora website or Smartphone
application, then use
-(thumbs up)
or
,(thumbs down) to personalize
stations. To set up an account, or for
more information, go to
www.pandora.com. Pandora may
not be available in Canada or
Mexico.
A phone or tablet with Internet
connection and the Pandora
application installed is required.
Personal cell phone data plans are
used. Make sure the latest version
is installed on the device.
Launching Pandora
Connect the iPhone to the USB
port, or connect Android®or
BlackBerry®through Bluetooth. See
Auxiliary Jack on page 7-21 or
Bluetooth (Infotainment Controls -
Base Radio) on page 7-33 or
Bluetooth (Voice Recognition - Base
Radio) on page 7-37 orBluetooth
(Overview) on page 7-31 or
Bluetooth (Infotainment Controls -
Base Connected Radio) on
page 7-42 orBluetooth (Voice
Recognition - Base Connected
Radio) on page 7-47. For first time
use, set up the stations before
connecting to the vehicle. The
Pandora icon will be available on
the Home Page.
When Pandora is chosen, the
Pandora logo will populate on the
screen and the system will display
“Acquiring Pandora Radio Station.”
Launch times can be significant.
Page 273 of 542

Black plate (7,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/28/13
Driving and Operating 9-7
To gain more ground clearance if
needed, it may be necessary to
remove the front fascia lower
air dam.
{Caution
Operating the vehicle for
extended periods without the front
fascia lower air dam installed can
cause improper air flow to the
engine. Re-attach the front fascia
air dam after off-road driving.
Loading the Vehicle for
Off-Road Driving
{Warning
.Unsecured cargo on the load
floor can be tossed about
when driving over rough
terrain. You or your
passengers can be struck by
flying objects. Secure the
cargo properly.(Continued)
Warning (Continued)
.Keep cargo in the cargo area
as far forward and as low as
possible. The heaviest things
should be on the floor,
forward of the rear axle.
.Heavy loads on the roof raise
the vehicle's center of gravity,
making it more likely to roll
over. You can be seriously or
fatally injured if the vehicle
rolls over. Put heavy loads
inside the cargo area, not on
the roof.
For more information about loading
the vehicle, see If the Vehicle Is
Stuck on page 9-14 andTires on
page 10-52.
Environmental Concerns
.Always use established trails,
roads, and areas that have been
set aside for public off-road
recreational driving and obey all
posted regulations.
.Do not damage shrubs, flowers,
trees, or grasses or disturb
wildlife.
.Do not park over things that
burn. See Parking over Things
That Burn on page 9-32.
Driving on Hills
Driving safely on hills requires good
judgment and an understanding of
what the vehicle can and cannot do.
{Warning
Many hills are simply too steep
for any vehicle. Driving up hills
can cause the vehicle to stall.
Driving down hills can cause loss
of control. Driving across hills can
cause a rollover. You could be
injured or killed. Do not drive on
steep hills.
Before driving on a hill, assess the
steepness, traction, and
obstructions. If the terrain ahead
Page 295 of 542

Black plate (29,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/28/13
Driving and Operating 9-29
Retained Accessory
Power (RAP)
The following vehicle accessories
can be used for up to 10 minutes
after the engine is turned off:
.Audio System
.Power Windows
.OnStar System (if equipped)
.Sunroof (if equipped)
These features work when the key
is in ON/RUN or ACC/
ACCESSORY. Once the key is
turned from ON/RUN to LOCK/OFF,
the windows and sunroof continue
to work up to 10 minutes or until any
door is opened. The radio continues
to work for up to 10 minutes or until
the driver door is opened.
Accessory Power Outlets (APOs)
The vehicle may have APOs in
several locations. See Power
Outlets on page 5-6. The APOs in the console or center
seat position are powered by RAP.
They will continue to work for up to
10 minutes after the key is turned
from ON/RUN to LOCK/OFF, or until
the driver door is opened.
The APOs on the center stack come
from the factory powered directly
from the vehicle battery, and supply
accessory power at all times,
regardless of ignition key position.
If electronic items are left plugged
into these APOs for long periods of
time with the vehicle off, the vehicle
battery could be drained. The
vehicle may not start if the battery is
allowed to drain for an extended
period of time.
Engine Coolant Heater
The engine heater can provide
easier starting and better fuel
economy during engine warm-up in
cold weather conditions at or below
−18°C (0°F). Vehicles with an
engine heater should be plugged in
at least four hours before starting.An internal thermostat in the
plug-end of the cord may exist,
which will prevent engine coolant
heater operation at temperatures
above
−18°C (0°F).
If the vehicle has a diesel engine,
see the Duramax diesel
supplement.
To Use the Engine Coolant
Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord. The cord is
secured to the driver side fender
with a clip, next to the engine
compartment fuse block.
Carefully remove the wire tie
that bundles the electrical plug.
Do not cut the electrical cord.
3. Plug the cord into a normal, grounded 110-volt AC outlet.
Page 369 of 542

Black plate (103,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/29/13
Driving and Operating 9-103
Warning (Continued)
rear weight distribution ratio is
necessary to provide proper
braking performance.
Total vehicle reserve capacity is the
difference between the GVWR and
the weight of the truck with full fuel
and passengers. It is the amount of
weight that can be added to the
vehicle before reaching the GVWR.
Keep in mind that reserve capacity
numbers are intended as a guide
when selecting the amount of
equipment or cargo the truck can
carry. If unsure of the vehicle's front,
rear, or total weight, go to a weigh
station and weigh the vehicle. Your
dealer can also help with this.
The total vehicle reserve capacity
for the vehicle can be found in the
lower right corner of the
Certification/Tire label as shown
previously. See your dealer for additional
advice and information about using
a snow plow on the vehicle. Also,
see
Vehicle Load Limits on
page 9-15.
Emergency Roof Lamp
Provisions
Vehicles with the RPO VYU snow
plow prep package also have an
emergency roof lamp provision
package, RPO TRW. Wiring for the
emergency roof lamp is provided
above the overhead console. See
Auxiliary Roof-Mounted Lamp on
page 6-6 for switch location.
Pickup Conversion to
Chassis Cab
We are aware that some vehicle
owners might consider having the
pickup box removed and a
commercial or recreational body
installed. Owners should be aware
that, as manufactured, there are
differences between a chassis cab
and a pickup with the box removed
which could affect vehicle safety.
The components necessary to adapt
a pickup to permit its safe use with
a specialized body should be
installed by the body builder.
Page 421 of 542

Black plate (51,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/29/13
Vehicle Care 10-51
Number Usage1 Accessory Power Outlet 3
2 Accessory Power Outlet 4
7 Body Control Module 4
8 Body Control Module 8
9 Rear Seat Entertainment
10 Cargo Lamp
15 Steering Wheel Controls
18 Radio
19 Spare
20 Sunroof
23 Airbag/Info
26 Export/Power Take Off/SEO Battery 1
27 Obstacle Detection/ USB Ports Number Usage
28 Body Control Module 2
32 SEO Battery 2
35 AC Inverter
36 Amplifier
37 Spare
39 Rear Sliding Window
42 Right Door Window Motor
43 Front Blower
44 TPIM2/SEO
45 Body Control Module 6
46 Body Control Module 7
47 Passenger Seat
50 Retained Accessory Power/Accessory
51 Rear Sliding Window Open Number Usage
52 Rear Sliding Window Close
Page 480 of 542

Black plate (4,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/28/13
11-4 Service and Maintenance
.Visually inspect windshield wiper
blades for wear, cracking,
or contamination. SeeExterior
Care on page 10-96. Replace
worn or damaged wiper blades.
See Wiper Blade Replacement
on page 10-38.
.Check tire inflation pressures.
See Tire Pressure on
page 10-61.
.Inspect tire wear. See Tire
Inspection on page 10-66.
.Visually check for fluid leaks.
.Inspect engine air cleaner filter.
See Engine Air Cleaner/Filter on
page 10-18.
.Inspect brake system.
.Visually inspect steering,
suspension, and chassis
components for damaged, loose,
or missing parts or signs of wear
at least once a year. See
Exterior Care on page 10-96.
Lubricate the suspension and
steering components at least every other oil
change. (If equipped with grease
fittings)
.Check restraint system
components. See
Safety System
Check on page 3-20.
.Visually inspect fuel system for
damage or leaks.
.Visually inspect exhaust system
and nearby heat shields for
loose or damaged parts.
.Lubricate body components. See
Exterior Care on page 10-96.
.Check starter switch. See Starter
Switch Check on page 10-36.
.Check automatic transmission
shift lock control function. See
Automatic Transmission Shift
Lock Control Function Check on
page 10-37.
.Check ignition transmission lock.
See Ignition Transmission Lock
Check on page 10-37.
.Check parking brake and
automatic transmission park
mechanism. See Park Brake and
P (Park) Mechanism Check on
page 10-37.
.Check accelerator pedal for
damage, high effort, or binding.
Replace if needed.
.Visually inspect gas strut for
signs of wear, cracks, or other
damage. Check the hold open
ability of the strut. See your
dealer if service is required.
.Inspect sunroof track and seal,
if equipped. See Sunroof on
page 2-22.
.Verify spare tire key lock
operation and lubricate as
needed. See Tire Changing on
page 10-78.
Page 530 of 542

Black plate (2,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/29/13
i-2 INDEX
Automatic TransmissionManual Mode . . . . . . . . . . . . . . . . . 9-37
Shift Lock Control
Function Check . . . . . . . . . . . 10-37
Auxiliary Roof Mounted Lamp . . . . . . . . . . . 6-6
Auxiliary Jack . . . . . . . . . . . . . . . . . . 7-21
Axle, Front . . . . . . . . . . . . . . . . . . . . 10-33
Axle, Rear . . . . . . . . . . . . . . . . . . . . 10-34
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-31 Jump Starting . . . . . . . . . . . . . . . 10-89
Load Management . . . . . . . . . . . . . 6-8
Power Protection . . . . . . . . . . . . . . 6-9
Voltage and Charging
Messages . . . . . . . . . . . . . . . . . . . 5-35
Blade Replacement, Wiper . . . 10-38
Blind Spot Mirrors . . . . . . . . . . . . . 2-16
Bluetooth
Overview . . . . . . . . 7-31, 7-33, 7-37, 7-42, 7-47
Bluetooth Audio . . . . . . . . . . . . . . . 7-22 Brake
Pedal and Adjustable
Throttle . . . . . . . . . . . . . . . . . . . . . . 9-24
System Warning Light . . . . . . . . 5-24
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-28 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-53
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-55
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-29
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-54
System Messages . . . . . . . . . . . . 5-36
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
Break-In, New Vehicle . . . . . . . . . 9-23
Bulb Replacement . . . . . . . . . . . . 10-42
Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . 10-41
Fog Lamps . . . . . . . . . . . . . 6-5, 10-40
Halogen Bulbs . . . . . . . . . . . . . . 10-39
Headlamp Aiming . . . . . . . . . . . 10-39
Headlamps . . . . . . . . . . . . . . . . . 10-39
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-39 Bulb Replacement (cont'd)
License Plate Lamps . . . . . . . 10-42
Taillamps . . . . . . . . . . . . . . . . . . . 10-40
Taillamps, Turn Signal,
Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-41
Buying New Tires . . . . . . . . . . . . . 10-70
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-5
California Fuel Requirements . . . . . . . . . . . 9-71
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-2
Canadian Vehicle Owners . . . . . . . . iii
Capacities and
Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-33
Tailgate . . . . . . . . . . . . . . . . . . . . . . . 2-10
Winter Driving . . . . . . . . . . . . . . . . 9-12
Card Reader SD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-21
Cargo
Tie-Downs . . . . . . . . . . . . . . . . . . . . . 4-4
Page 535 of 542

Black plate (7,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/29/13
INDEX i-7
J
JackAuxiliary . . . . . . . . . . . . . . . . . . . . . . 7-21
Jump Starting . . . . . . . . . . . . . . . . . 10-89
K
Key and Lock Messages . . . . . . . 5-39
Keyless Entry Remote (RKE) System . . . . . . . . 2-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
L
Labeling, Tire Sidewall . . . . . . . . 10-54
Lamps Auxiliary Roof
Mounted Lamp . . . . . . . . . . . . . . . 6-6
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . . . . . . . . . . . . . . . . . . 6-2
License Plate . . . . . . . . . . . . . . . 10-42
Malfunction Indicator . . . . . . . . . 5-21
Messages . . . . . . . . . . . . . . . . . . . . 5-39 Lamps (cont'd)
On Reminder . . . . . . . . . . . . . . . . . 5-30
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-7
Taillamps . . . . . . . . . . . . . . . . . . . 10-40
Lane Departure Warning (LDW) . . . . . . . . . . . . . . . 9-68
Lane Departure Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . 3-19
Lap-Shoulder Belt . . . . . . . . . . . . . 3-14
LATCH System
Replacing Parts after aCrash . . . . . . . . . . . . . . . . . . . . . . . 3-57
LATCH, Lower Anchors and
Tethers for Children . . . . . . . . . . 3-45
Light Hill Decent Control . . . . . . . . . . . 5-26
Lighting
Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Illumination Control . . . . . . . . . . . . 6-6
Lights Airbag On-Off . . . . . . . . . . . . . . . . . 5-18
Airbag Readiness . . . . . . . . . . . . . 5-18
Antilock Brake System
(ABS) Warning . . . . . . . . . . . . . . 5-25
Brake System Warning . . . . . . . 5-24 Lights (cont'd)
Charging System . . . . . . . . . . . . . 5-21
Cruise Control . . . . . . . . . . . . . . . . 5-30
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
Four-Wheel-Drive . . . . . . . . . . . . . 5-26
Front Fog Lamp . . . . . . . . . . . . . . 5-29
High-Beam On . . . . . . . . . . . . . . . . 5-29
High/Low Beam Changer . . . . . . 6-2
Lane Departure Warning . . . . . . 5-26
Low Fuel Warning . . . . . . . . . . . . 5-29
Safety Belt Reminders . . . . . . . . 5-17
Security . . . . . . . . . . . . . . . . . . . . . . 5-29
StabiliTrak
®OFF . . . . . . . . . . . . . 5-27
Tire Pressure . . . . . . . . . . . . . . . . . 5-28
Tow/Haul Mode . . . . . . . . . . . . . . . 5-26
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 5-28
Traction Off . . . . . . . . . . . . . . . . . . . 5-27
Locking Rear Axle . . . . . . . . . . . . . 9-59
Locks Automatic Door . . . . . . . . . . . . . . . . 2-9
Delayed Locking . . . . . . . . . . . . . . . 2-8
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Lockout Protection . . . . . . . . . . . . . 2-9
Power Door . . . . . . . . . . . . . . . . . . . . 2-8
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-9
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Page 538 of 542

Black plate (10,1)Chevrolet Silverado Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-
5853506) - 2014 - CRC 3rd Edition - 8/29/13
i-10 INDEX
PrivacyRadio Frequency
Identification (RFID) . . . . . . . 13-15
Program Courtesy Transportation . . . . . . 13-7
Proposition 65 Warning, California . . . . . . . . . . . . . . . . . . . . . 10-2
R
Radio Frequency
Identification (RFID) . . . . . . . . 13-15
Statement . . . . . . . . . . . . . . . . . . 13-15
Radios
AM-FM Radio . . . . . . . . . . . . . . . . . . 7-8
Reception . . . . . . . . . . . . . . . . . . . . 7-11
Satellite . . . . . . . . . . . . . . . . . . . . . . . 7-10
Reading Lamps . . . . . . . . . . . . . . . . . 6-7
Rear Axle . . . . . . . . . . . . . . . . . . . . . 10-34 Locking . . . . . . . . . . . . . . . . . . . . . . . 9-59
Rear Seats . . . . . . . . . . . . . . 3-10, 3-11
Rear Windows . . . . . . . . . . . . . . . . . 2-21
Rearview Mirrors . . . . . . . . . . . . . . 2-18 Automatic Dimming . . . . . . . . . . . 2-18
Reclining Seatbacks . . . . . . . . . . . . 3-5
Recommended Fluids and Lubricants . . . . . . . . . . . . . . . . . . . 11-12 Records
Maintenance . . . . . . . . . . . . . . . . .11-16
Recreational Vehicle Towing . . . . . . . . . . . . . . . . . . . . . . 10-94
Reimbursement Program, GM Mobility . . . . . . . . . . . . . . . . . . 13-5
Remote Keyless Entry (RKE)
System . . . . . . . . . . . . . . . . . . . . . . . . 2-3
Remote Vehicle Start . . . . . . . . . . . 2-6
Replacement Glass . . . . . . . . . . . . . . . . . . . . . . . 10-38
Replacement Bulbs . . . . . . . . . . . 10-42
Replacement Parts Airbags . . . . . . . . . . . . . . . . . . . . . . . 3-36
Maintenance . . . . . . . . . . . . . . . . .11-15
Replacing Airbag System . . . . . . 3-36
Replacing LATCH System
Parts after a Crash . . . . . . . . . . . 3-57
Replacing Safety Belt System Parts after a Crash . . . 3-21
Reporting Safety Defects
Canadian Government . . . . . . 13-13
General Motors . . . . . . . . . . . . . 13-13
U.S. Government . . . . . . . . . . . 13-12
Restraints
Where to Put . . . . . . . . . . . . . . . . . 3-43 Retained Accessory
Power (RAP) . . . . . . . . . . . . . . . . . 9-29
Reverse Tilt Mirrors . . . . . . . . . . . . 2-17
Ride Control Systems Messages . . . . . . . . . . . . . . . . . . . . 5-40
Roads Driving, Wet . . . . . . . . . . . . . . . . . . 9-11
Roadside Assistance Program . . . . . . . . . . . . . . . . . . . . . . 13-5
Roof Sunroof . . . . . . . . . . . . . . . . . . . . . . . 2-22
Rotation, Tires . . . . . . . . . . . . . . . . 10-67
Routing, Engine Drive Belt . . . . . 12-5
Running the Vehicle While Parked . . . . . . . . . . . . . . . . . . . . . . . 9-33
S
Safety Belts . . . . . . . . . . . . . . . . . . . 3-12Care . . . . . . . . . . . . . . . . . . . . . . . . . . 3-20
Extender . . . . . . . . . . . . . . . . . . . . . . 3-20
How to Wear Safety BeltsProperly . . . . . . . . . . . . . . . . . . . . . 3-13
Lap Belt . . . . . . . . . . . . . . . . . . . . . . 3-19
Lap-Shoulder Belt . . . . . . . . . . . . 3-14