2018 CHEVROLET SILVERADO 2500 brake light

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
348 Vehicle Care
Replacing Brake System Parts
Always replace brake system parts
with new, approved replacement
parts. If this is not done, the brakes
may not work properly. The braking
performance expected can change
in many other ways if the wrong
replacement brake parts are
installed or parts are improperly
installed.
Brake Fluid
The brake master cylinder reservoir
is filled with DOT 3 brake fluid. See
Engine Compartment Overview
0328 for the location of the
reservoir.
There are only two reasons why the
brake fluid level in the reservoir may
go down: .
Normal brake lining wear. When
new linings are installed, the
fluid level goes back up.
. A fluid leak in the brake
hydraulic system. Have the
brake hydraulic system fixed.
With a leak, the brakes will not
work well.
Always clean the brake fluid
reservoir cap and the area around
the cap before removing it.
Do not top off the brake fluid.
Adding fluid does not correct a leak.
If fluid is added when the linings are
worn, there will be too much fluid
when new brake linings are
installed. Add or remove fluid, as
necessary, only when work is done
on the brake hydraulic system.
{Warning
If too much brake fluid is added, it
can spill on the engine and burn,
if the engine is hot enough. You
or others could be burned, and
the vehicle could be damaged. (Continued)
Warning (Continued)
Add brake fluid only when work is
done on the brake hydraulic
system.
When the brake fluid falls to a low
level, the brake warning light comes
on. See Brake System Warning
Light 0148.
Brake fluid absorbs water over time.
Replace brake fluid at the specified
intervals to prevent increased
stopping distance. See Maintenance
Schedule 0430.
Checking Brake Fluid
Check brake fluid by looking at the
brake fluid reservoir. See Engine
Compartment Overview 0328.

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
Vehicle Care 383
the sensor matching process is
performed successfully. See
your dealer for service.
. Replacement tires or wheels do
not match the original equipment
tires or wheels. Tires and wheels
other than those recommended
could prevent the TPMS from
functioning properly. See Buying
New Tires 0389.
. Operating electronic devices or
being near facilities using radio
wave frequencies similar to the
TPMS could cause the TPMS
sensors to malfunction.
If the TPMS is not functioning
properly, it cannot detect or signal a
low tire pressure condition. See
your dealer for service if the TPMS
malfunction light and DIC message
come on and stay on.
Tire Fill Alert (If Equipped)
This feature provides visual and
audible alerts outside the vehicle to
help when inflating an underinflated
tire to the recommended cold tire
pressure. When the low tire pressure warning
light comes on:
1. Park the vehicle in a safe, level place.
2. Set the parking brake firmly.
3. Place the vehicle in P (Park).
4. Add air to the tire that is underinflated. The turn signal
lamp will flash.
When the recommended
pressure is reached, the horn
sounds once and the turn
signal lamp will stop flashing
and briefly turn solid.
Repeat these steps for all
underinflated tires that have
illuminated the low tire pressure
warning light.
{Warning
Overinflating a tire could cause
the tire to rupture and you or
others could be injured. Do not
exceed the maximum pressure (Continued)
Warning (Continued)
listed on the tire sidewall.
SeeTire Sidewall Labeling 0372
and Vehicle Load Limits 0238.
If the tire is overinflated by more
than 35 kPa (5 psi), the horn will
sound multiple times and the turn
signal lamp will continue to flash for
several seconds after filling stops.
To release and correct the pressure,
while the turn signal lamp is still
flashing, briefly press the center of
the valve stem. When the
recommended pressure is reached,
the horn sounds once.
If the turn signal lamp does not flash
within 15 seconds after starting to
inflate the tire, the tire fill alert has
not been activated or is not working.
If the hazard warning flashers are
on, the tire fill alert visual feedback
will not work properly.
The TPMS will not activate the tire
fill alert properly under the following
conditions:

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
384 Vehicle Care
.There is interference from an
external device or transmitter.
. The air pressure from the
inflation device is not sufficient
to inflate the tire.
. There is a malfunction in
the TPMS.
. There is a malfunction in the
horn or turn signal lamps.
. The identification code of the
TPMS sensor is not registered to
the system.
. The battery of the TPMS sensor
is low.
If the tire fill alert does not operate
due to TPMS interference, move the
vehicle about 1 m (3 ft) back or
forward and try again. If the tire fill
alert feature is not working, use a
tire pressure gauge.
TPMS Sensor Matching
Process
Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the vehicle’s tires or replacing one or
more of the TPMS sensors. Also,
the TPMS sensor matching process
should be performed after replacing
a spare tire with a road tire
containing the TPMS sensor. The
malfunction light and the DIC
message should go off at the next
ignition cycle. The sensors are
matched to the tire/wheel positions,
using a TPMS relearn tool, in the
following order: driver side front tire,
passenger side front tire, passenger
side rear tire, and driver side rear.
See your dealer for service or to
purchase a relearn tool. A TPMS
relearn tool can also be purchased.
See Tire Pressure Monitor Sensor
Activation Tool at
www.gmtoolsandequipment.com or
call 1-800-GM TOOLS
(1-800-468-6657).
There are two minutes to match the
first tire/wheel position, and
five minutes overall to match all four
tire/wheel positions. If it takes
longer, the matching process stops
and must be restarted.
The TPMS sensor matching
process is:
1. Set the parking brake.
2. Turn the ignition on without starting the vehicle.
3. Uplevel DIC Only: Make sure the Tire Pressure info page
option is turned on. The info
pages on the DIC can be
turned on and off through the
Settings menu.
See Driver Information Center
(DIC) (Base Level) 0154 or
Driver Information Center (DIC)
(Uplevel) 0156.
4. If the vehicle has an uplevel DIC, use the DIC controls on
the right side of the steering
wheel to scroll to the Tire
Pressure screen under the DIC
info page.
If the vehicle has a base level
DIC, use the trip odometer
reset stem to scroll to the Tire
Pressure screen.

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
Vehicle Care 389
Vehicle Storage
Tires age when stored normally
mounted on a parked vehicle. Park
a vehicle that will be stored for at
least a month in a cool, dry, clean
area away from direct sunlight to
slow aging. This area should be free
of grease, gasoline, or other
substances that can deteriorate
rubber.
Parking for an extended period can
cause flat spots on the tires that
may result in vibrations while
driving. When storing a vehicle for
at least a month, remove the tires or
raise the vehicle to reduce the
weight from the tires.
Buying New Tires
GM has developed and matched
specific tires for the vehicle. The
original equipment tires installed
were designed to meet General
Motors Tire Performance Criteria
Specification (TPC Spec)
system rating. When
replacement tires are needed,GM strongly recommends
buying tires with the same TPC
Spec rating.
GM's exclusive TPC Spec
system considers over a dozen
critical specifications that impact
the overall performance of the
vehicle, including brake system
performance, ride and handling,
traction control, and tire
pressure monitoring
performance. GM's TPC Spec
number is molded onto the tire's
sidewall near the tire size. If the
tires have an all-season tread
design, the TPC Spec number
will be followed by MS for mud
and snow. See
Tire Sidewall
Labeling 0372 for additional
information.
GM recommends replacing worn
tires in complete sets of four (six
for dual rear wheels). Uniform
tread depth on all tires will help
to maintain the performance of
the vehicle. Braking and handling performance may be
adversely affected if all the tires
are not replaced at the same
time. If proper rotation and
maintenance have been done,
all four tires (six for dual rear
wheels) should wear out at
about the same time. See
Tire
Rotation 0386 for information
on proper tire rotation. However,
if it is necessary to replace only
one axle set of worn tires, place
the new tires on the rear axle
(two for single rear wheels, four
for dual rear wheels).
{Warning
Tires could explode during
improper service. Attempting
to mount or dismount a tire
could cause injury or death.
Only your dealer or authorized
tire service center should
mount or dismount the tires.

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
Service and Maintenance 437
Additional
Maintenance and Care
Your vehicle is an important
investment and caring for it properly
may help to avoid future costly
repairs. To maintain vehicle
performance, additional
maintenance services may be
required.
It is recommended that your dealer
perform these services—their
trained dealer technicians know
your vehicle best. Your dealer can
also perform a thorough
assessment with a multi-point
inspection to recommend when your
vehicle may need attention.
The following list is intended to
explain the services and conditions
to look for that may indicate
services are required.
Battery
The 12-volt battery supplies power
to start the engine and operate any
additional electrical accessories. .
To avoid break-down or failure to
start the vehicle, maintain a
battery with full cranking power.
. Trained dealer technicians have
the diagnostic equipment to test
the battery and ensure that the
connections and cables are
corrosion-free.
Belts
. Belts may need replacing if they
squeak or show signs of
cracking or splitting.
. Trained dealer technicians have
access to tools and equipment
to inspect the belts and
recommend adjustment or
replacement when necessary.
Brakes
Brakes stop the vehicle and are
crucial to safe driving.
. Signs of brake wear may include
chirping, grinding, or squealing
noises, or difficulty stopping. .
Trained dealer technicians have
access to tools and equipment
to inspect the brakes and
recommend quality parts
engineered for the vehicle.
Fluids
Proper fluid levels and approved
fluids protect the vehicle’s systems
and components. See
Recommended Fluids and
Lubricants 0440 for GM approved
fluids.
. Engine oil and windshield
washer fluid levels should be
checked at every fuel fill.
. Instrument cluster lights may
come on to indicate that fluids
may be low and need to be
filled.
Hoses
Hoses transport fluids and should
be regularly inspected to ensure
that there are no cracks or leaks.
With a multi-point inspection, your
dealer can inspect the hoses and
advise if replacement is needed.

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
438 Service and Maintenance
Lamps
Properly working headlamps,
taillamps, and brake lamps are
important to see and be seen on
the road.
.Signs that the headlamps need
attention include dimming, failure
to light, cracking, or damage.
The brake lamps need to be
checked periodically to ensure
that they light when braking.
. With a multi-point inspection,
your dealer can check the lamps
and note any concerns.
Shocks and Struts
Shocks and struts help aid in control
for a smoother ride.
. Signs of wear may include
steering wheel vibration, bounce/
sway while braking, longer
stopping distance, or uneven
tire wear.
. As part of the multi-point
inspection, trained dealer
technicians can visually inspect
the shocks and struts for signs of leaking, blown seals,
or damage, and can advise
when service is needed.
Tires
Tires need to be properly inflated,
rotated, and balanced. Maintaining
the tires can save money and fuel,
and can reduce the risk of tire
failure.
. Signs that the tires need to be
replaced include three or more
visible treadwear indicators; cord
or fabric showing through the
rubber; cracks or cuts in the
tread or sidewall; or a bulge or
split in the tire.
. Trained dealer technicians can
inspect and recommend the right
tires. Your dealer can also
provide tire/wheel balancing
services to ensure smooth
vehicle operation at all speeds.
Your dealer sells and services
name brand tires. Vehicle Care
To help keep the vehicle looking like
new, vehicle care products are
available from your dealer. For
information on how to clean and
protect the vehicle’s interior and
exterior, see
Interior Care 0423 and
Exterior Care 0418.
Wheel Alignment
Wheel alignment is critical for
ensuring that the tires deliver
optimal wear and performance.
. Signs that the alignment may
need to be adjusted include
pulling, improper vehicle
handling, or unusual tire wear.
. Your dealer has the required
equipment to ensure proper
wheel alignment.
Windshield
For safety, appearance, and the
best viewing, keep the windshield
clean and clear.
. Signs of damage include
scratches, cracks, and chips.

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
Index 475
IndexA
Accessories andModifications . . . . . . . . . . . . . . . . . . 325
Accessory Power . . . . . . . . . . . . . . . 251
Active Fuel Management . . . . . . . 254
Add-On Electrical Equipment . . . 318
Adding a Snow Plow or Similar Equipment . . . . . . . . . . . . . 318
Additional Information OnStar . . . . . . . . . . . . . . . . . . . . . . . 465
Additional Maintenance and Care . . . . . . . . . . . . . . . . . . . . . . 437
Adjustable Throttle and Brake Pedal . . . . . . . . . . . . . . . . . . . 246
Adjustments Lumbar, Front Seats . . . . . . . . . . . . 58
Agreements Trademarks and License . . . . . 210
Air Cleaner/Filter, Engine . . . . . . . 338
Air Conditioning . . . . . .216, 218, 220
Air Filter, Passenger
Compartment . . . . . . . . . . . . . . . . . 223
Air Vents . . . . . . . . . . . . . . . . . . . . . . . 223
Airbag System Check . . . . . . . . . . . . . . . . . . . . . . . . . . 90
How Does an AirbagRestrain? . . . . . . . . . . . . . . . . . . . . . 80
Passenger Sensing System . . . . 84 Airbag System (cont'd)
What Makes an Airbag
Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 80
What Will You See after an
Airbag Inflates? . . . . . . . . . . . . . . . 81
When Should an Airbag Inflate? . . . . . . . . . . . . . . . . . . . . . . . . 79
Where Are the Airbags? . . . . . . . . 77
Airbags
Adding Equipment to theVehicle . . . . . . . . . . . . . . . . . . . . . . . . 89
Light On-Off . . . . . . . . . . . . . . . . . . 144
On-Off Light . . . . . . . . . . . . . . . . . . 144
On-Off Switch . . . . . . . . . . . . . . . . . . 82
Passenger Status Indicator . . . 145
Readiness Light . . . . . . . . . . . . . . 143
Servicing Airbag-Equipped Vehicles . . . . . . . . . . . . . . . . . . . . . . . 88
System Check . . . . . . . . . . . . . . . . . . 76
Alarm Vehicle Security . . . . . . . . . . . . . . . . 43
All-Season Tires . . . . . . . . . . . . . . . . 370
All-Terrain Tires . . . . . . . . . . . . . . . . . 372
AM-FM Radio . . . . . . . . . . . . . . . . . . . 185
Antenna Fixed Mast . . . . . . . . . . . . . . . . . . . 189
Multi-band . . . . . . . . . . . . . . . . . . . . 189

Chevrolet Silverado LD 1500 and Silverado 2500/3500 Owner Manual (GMNA-
Localizing-U.S./Canada-12162993) - 2019 - crc - 4/4/18
476 Index
Antilock Brake System (ABS) . . . 270Warning Light . . . . . . . . . . . . . . . . . 149
Appearance Care Exterior . . . . . . . . . . . . . . . . . . . . . . . 418
Interior . . . . . . . . . . . . . . . . . . . . . . . . 423
Apple CarPlay and Android Auto . . . . . . . . . . . . . . . . . . 209
Assistance Program, Roadside . . . . . . . . . . . . . . . . . . . . . . 453
Assistance Systems for Driving . . . . . . . . . . . . . . . . . . . . . . . . 282
Assistance Systems for Parking and Backing . . . . . . . . . . 280
Audio Bluetooth . . . . . . . . . . . . . . . . . . . . . 196
Theft-Deterrent Feature . . . . . . . 182
Automatic Dimming Mirrors . . . . . . . . . . . . . . . . 48
Door Locks . . . . . . . . . . . . . . . . . . . . . 40
Forward Braking . . . . . . . . . . . . . . 285
Headlamp System . . . . . . . . . . . . 174
Transmission . . . . . . . . . . . . . . . . . 256
Transmission Fluid . . . . . . 335, 337
Automatic Transmission Manual Mode . . . . . . . . . . . . . . . . . 259
Shift Lock Control Function
Check . . . . . . . . . . . . . . . . . . . . . . . 354 Auxiliary
Roof Mounted Lamp . . . . . . . . . . 176
Auxiliary Jack . . . . . . . . . . . . . . . . . . . 195
Avoiding Untrusted Media Devices . . . . . . . . . . . . . . . . . . . . . . . 190
Axle, Front . . . . . . . . . . . . . . . . . . . . . . 350
Axle, Rear . . . . . . . . . . . . . . . . . . . . . . 351
B
Battery Exterior Lighting BatterySaver . . . . . . . . . . . . . . . . . . . . . . . 180
Load Management . . . . . . . . . . . . 179
Power Protection . . . . . . . . . . . . . 180
Battery - North America . . . . 349, 408
Blade Replacement, Wiper . . . . . 355
Blind Spot Mirrors . . . . . . . . . . . . . . . 48
Bluetooth Overview . . . . . . . . . . . . . . . . 203, 205
Bluetooth Audio . . . . . . . . . . . . . . . . 196
Brake Pedal and AdjustableThrottle . . . . . . . . . . . . . . . . . . . . . . 246
System Warning Light . . . . . . . . 148
Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . 347 Antilock . . . . . . . . . . . . . . . . . . . . . . . 270
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 272
Fluid . . . . . . . . . . . . . . . . . . . . . . . . . . 348 Brakes (cont'd)
Parking . . . . . . . . . . . . . . . . . . . . . . . 271
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 227 Automatic Forward . . . . . . . . . . . 285
Break-In, New Vehicle . . . . . . . . . . 246
Bulb Replacement Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . . . 361
Fog Lamps . . . . . . . . . . . . . . . . . . . 359
Halogen Bulbs . . . . . . . . . . . . . . . . 357
Headlamp Aiming . . . . . . . . . . . . . 357
Headlamps . . . . . . . . . . . . . . . . . . . 357
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . . . 358
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 358
Taillamps . . . . . . . . . . . . . . . . . . . . . 359
Taillamps, Turn Signal, Stoplamps, and Back-up
Lamps . . . . . . . . . . . . . . . . . . . . . . 359
Buying New Tires . . . . . . . . . . . . . . . 389
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 129