ECU CHEVROLET SILVERADO 1500 2013 Repair Manual

Black plate (71,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
Vehicle Care 10-71
For proper torque, see“Wheel Nut
Torque” underCapacities and
Specifications on page 12‑2.
See If a Tire Goes Flat on
page 10‑72 for more information.
Used Replacement Wheels
{WARNING
Replacing a wheel with a used
one is dangerous. How it has
been used or how far it has been
driven may be unknown. It could
fail suddenly and cause a crash.
When replacing wheels, use a
new GM original equipment
wheel.
Tire Chains
{WARNING
If the vehicle has dual wheels or
P265/65R18, P275/55R20,
LT265/70R17, LT265/70R18,
LT265/60R20, P285/50R20,
P285/45R22 or 285/45R22 size
tires, do not use tire chains. They
can damage the vehicle because
there is not enough clearance.
Tire chains used on a vehicle
without the proper amount of
clearance can cause damage to
the brakes, suspension, or other
vehicle parts. The area damaged
by the tire chains could cause you
to lose control of the vehicle and
you or others may be injured in a
crash.
Use another type of traction
device only if its manufacturer
recommends it for use on the
vehicle and tire size combination (Continued)
WARNING (Continued)
and road conditions. Follow that
manufacturer's instructions. To
help avoid damage to the vehicle,
drive slowly, readjust, or remove
the device if it is contacting the
vehicle, and do not spin the
vehicle's wheels.
If you do find traction devices that
will fit, install them on the rear
tires.
Notice: If the vehicle does not
have dual wheels and has a tire
size other than P265/65R18, P275/
55R20, LT265/70R17, LT265/
70R18, LT265/60R20, P285/50R20,
P285/45R22, or 285/45R22, use
tire chains only where legal and
only when you must. Use chains
that are the proper size for the
tires. Install them on the tires of
the rear axle. Do not use chains
on the tires of the front axle.
Tighten them as tightly as
possible with the ends securely

Black plate (78,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
10-78 Vehicle Care
Front Position - All Other ModelsPosition the jack under the
vehicle, as shown. If the flat tire
is on the front of the vehicle (all
other models), position the jack
on the frame behind the flat tire.Rear Position –1500 Models
5. If the flat tire is on the rear, for 1500 models position the jack
under the rear axle about 5 cm
(2 in) inboard of the shock
absorber bracket.Rear Position –All Other Models
For all other models, position the
jack under the rear axle between
the spring anchor and the shock
absorber bracket.
If a snow plow has been added
to the front of the vehicle, lower
the snow plow fully before
raising the vehicle.
Make sure that the jack head is
positioned so that the rear axle
is resting securely between the
grooves that are on the
jack head.

Black plate (83,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
Vehicle Care 10-83
7. Make sure the tire is storedsecurely. Push, pull (A), and then
try to turn (B) the tire. If the tire
moves, use the wheel wrench to
tighten the cable.
8. Reinstall the spare tire lock, if the vehicle has one. To store the jack and jack tools:
A. Wing Nut Retaining Wheel
Blocks
B. Wheel Blocks
C. Wing Nut Retaining Tool Kit
D. Wheel Wrench and Extensions
E. Tool Bag
F. Jack Mounting Bracket
G. Jack
H. Bolt Retaining Wheel Blocks 1. Put the tools (D) in the tool
bag (E) and place them in the
retaining bracket (C).
2. Tighten down the wing nut (C).
3. Assemble the wheel blocks (B) and jack (G) together with the
wing nut (A) and retaining
bolt (H).
4. Position the jack (G) in the mounting bracket (F). Position
the holes in the base of the
jack (G) onto the pin in the
mounting bracket (F).
5. Return them to their original location in the vehicle. For more
information, refer to “Removing
the Spare Tire and Tools” for
more information.

Black plate (90,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
10-90 Vehicle Care
Notice:If the vehicle is towed
with all four wheels on the
ground, the drivetrain
components could be damaged.
The repairs would not be covered
by the vehicle warranty. Do not
tow the vehicle with all four
wheels on the ground.
Two-wheel-drive vehicles should not
be towed with all four wheels on the
ground. Two-wheel-drive
transmissions have no provisions
for internal lubrication while being
towed. Four-Wheel-Drive Vehicles
Use the following procedure to
dinghy tow a four-wheel-drive
vehicle:
1. Position the vehicle being towed
behind the tow vehicle and shift
the transmission to P (Park).
2. Turn the engine off and firmly set the parking brake.
3. Securely attach the vehicle being towed to the tow vehicle.
{WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
4. Shift the transfer case to N (Neutral). See “Shifting into
Neutral” underFour-Wheel Drive
on page 9‑41 for the proper
procedure to select the Neutral
position for the vehicle.
5. Release the parking brake only after the vehicle being towed is
firmly attached to the towing
vehicle.
6. Turn the ignition to LOCK/OFF and remove the key —the
steering wheel will still turn.

Black plate (92,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
10-92 Vehicle Care
{WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
5. Use an adequate clamping device designed for towing to
ensure that the front wheels are
locked into the straight position.
6. Secure the vehicle to the dolly following the manufacturer's
instructions.
7. Shift the transfer case to N (Neutral). See “Shifting into
Neutral” underFour-Wheel Drive
on page 9‑41 for the proper
procedure to select the neutral
position for the vehicle. 8. Release the parking brake only
after the vehicle being towed is
firmly attached to the towing
vehicle.
9. Turn the ignition to LOCK/OFF.
After towing, see “Shifting Out of
Neutral” underFour-Wheel Drive on
page 9‑41.
Rear Towing (Rear Wheels Off
the Ground)
Two‐Wheel‐Drive Vehicles
Use the following procedure to dolly
tow a two-wheel-drive vehicle from
the rear:
1. Attach the dolly to the tow vehicle following the dolly
manufacturer's instructions.
2. Drive the rear wheels onto the dolly.
3. Firmly set the parking brake. See Parking Brake on
page 9‑54.
4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly following the manufacturer's
instructions.
6. Use an adequate clamping device designed for towing to
ensure that the front wheels are
locked into the straight position.
7. Turn the ignition to LOCK/OFF.

Black plate (93,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
Vehicle Care 10-93
Four‐Wheel‐Drive Vehicles
Use the following procedure to dolly
tow a four-wheel-drive vehicle from
the rear:
1. Attach the dolly to the towvehicle following the dolly
manufacturer's instructions.
2. Drive the rear wheels onto the dolly.
3. Firmly set the parking brake. See Parking Brake on
page 9‑54.
4. Put the transmission in P (Park).
5. Secure the vehicle to the dolly following the manufacturer's
instructions.
6. Use an adequate clamping device designed for towing to
ensure that the front wheels are
locked into the straight position.{WARNING
Shifting a four-wheel-drive
vehicle's transfer case into
N (Neutral) can cause the vehicle
to roll even if the transmission is
in P (Park). The driver or others
could be injured. Make sure the
parking brake is firmly set before
the transfer case is shifted to
N (Neutral).
7. Shift the transfer case to N (Neutral). See “Shifting into
Neutral” underFour-Wheel Drive
on page 9‑41 for the proper
procedure to select the neutral
position for the vehicle.
8. Turn the ignition to LOCK/OFF.
After towing, see “Shifting Out of
Neutral” underFour-Wheel Drive on
page 9‑41.
Appearance Care
Exterior Care
Washing the Vehicle
To preserve the vehicle's finish,
wash it often and out of direct
sunlight.
Notice: Do not use
petroleum-based, acidic,
or abrasive cleaning agents as
they can damage the vehicle's
paint, metal, or plastic parts.
If damage occurs, it would not be
covered by the vehicle's warranty.
Approved cleaning products can
be obtained from your dealer.
Follow all manufacturer
directions regarding correct
product usage, necessary safety
precautions, and appropriate
disposal of any vehicle care
product.
Notice: Avoid using
high-pressure washes closer than
30 cm (12 in) to the surface of the
vehicle. Use of power washers

Black plate (11,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
Customer Information 13-11
Chevrolet reserves the right to make
any changes or discontinue the
Roadside Assistance program at
any time without notification.
Roadside Assistance
Program (U.S. and
Canada)
For U.S.-purchased vehicles, call
1-800-243-8872; (Text Telephone
(TTY): 1-888-889-2438).
For Canadian-purchased vehicles,
call 1-800-268-6800.
Service is available 24 hours a day,
365 days a year.
Calling for Assistance
When calling Roadside Assistance,
have the following information
ready:
.Your name, home address, and
home telephone number.
.Telephone number of your
location.
.Location of the vehicle.
.Model, year, color, and license
plate number of the vehicle.
.Odometer reading, Vehicle
Identification Number (VIN), and
delivery date of the vehicle.
.Description of the problem.
Coverage
Services are provided up to 5 years/
160 000 km (100,000 mi), whichever
comes first.
In the U.S., anyone driving the
vehicle is covered. In Canada, a
person driving the vehicle without
permission from the owner is not
covered.
Roadside Assistance is not a part of
the New Vehicle Limited Warranty.
Chevrolet and General Motors of
Canada Limited reserve the right to
make any changes or discontinue
the Roadside Assistance program at
any time without notification.Chevrolet and General Motors of
Canada Limited reserve the right to
limit services or payment to an
owner or driver if they decide the
claims are made too often, or the
same type of claim is made many
times.
Services Provided
.Emergency Fuel Delivery:
Delivery of enough fuel for the
vehicle to get to the nearest
service station.
.Lock-Out Service:
Service to
unlock the vehicle if you are
locked out. A remote unlock may
be available if you have OnStar.
For security reasons, the driver
must present identification
before this service is given.
.Emergency Tow from a Public
Road or Highway: Tow to the
nearest Chevrolet dealer for
warranty service, or if the vehicle
was in a crash and cannot be
driven. Assistance is also given
when the vehicle is stuck in the
sand, mud, or snow.

Black plate (20,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
13-20 Customer Information
if the vehicle is leased, with the
consent of the lessee; in response
to an official request by police or
similar government office; as part of
GM's defense of litigation through
the discovery process; or, as
required by law. Data that GM
collects or receives may also be
used for GM research needs or may
be made available to others for
research purposes, where a need is
shown and the data is not tied to a
specific vehicle or vehicle owner.
OnStar®
If the vehicle is equipped with
OnStar®and has an active
subscription, additional data may be
collected through the OnStar
system. This includes information
about the vehicle’s operation; about
collisions involving the vehicle; the
use of the vehicle and its features;
and, in certain situations, the
location and approximate GPS
speed of the vehicle. Refer to the OnStar Terms and Conditions and
Privacy Statement on the OnStar
website.
Navigation System
If the vehicle is equipped with a
navigation system, use of the
system may result in the storage of
destinations, addresses, telephone
numbers, and other trip information.
See the navigation manual for
information on stored data and for
deletion instructions.
Radio Frequency
Identification (RFID)
RFID technology is used in some
vehicles for functions such as tire
pressure monitoring and ignition
system security, as well as in
connection with conveniences such
as Remote Keyless Entry (RKE)
transmitters for remote door locking/
unlocking and starting, and
in-vehicle transmitters for garage
door openers. RFID technology in
GM vehicles does not use or recordpersonal information or link with any
other GM system containing
personal information.
Radio Frequency
Statement
This vehicle has systems that
operate on a radio frequency that
comply with Part 15 of the Federal
Communications Commission (FCC)
rules and with Industry Canada
Standards RSS‐GEN/210/220/310.
Operation is subject to the following
two conditions:
1. The device may not cause
harmful interference.
2. The device must accept any interference received, including
interference that may cause
undesired operation of the
device.
Changes or modifications to any of
these systems by other than an
authorized service facility could void
authorization to use this equipment.

Black plate (1,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
OnStar 14-1
OnStar
OnStar Overview
OnStar Overview . . . . . . . . . . . . 14-1
OnStar Services
Emergency . . . . . . . . . . . . . . . . . . 14-2
Security . . . . . . . . . . . . . . . . . . . . . . 14-2
Navigation . . . . . . . . . . . . . . . . . . . 14-2
Connections . . . . . . . . . . . . . . . . . 14-3
Diagnostics . . . . . . . . . . . . . . . . . . 14-5
OnStar Additional Information
OnStar AdditionalInformation . . . . . . . . . . . . . . . . . 14-5
OnStar Overview
If equipped, this vehicle has a
comprehensive, in-vehicle system
that can connect to a live Advisor
for Emergency, Security, Navigation,
Connection, and Diagnostic
Services.
The OnStar system status light is
next to the OnStar buttons. If the
status light is:
.Solid Green: System is ready.
.Flashing Green: On a call.
.Red: Indicates a problem.
Press
Qor call 1-888-4ONSTAR
(1-888-466-7827) to speak to an
Advisor. Press
=to:
.Make a call, end a call,
or answer an incoming call.
.Give OnStar Hands-Free Calling
voice commands.
.Give OnStar Turn-by-Turn
Navigation voice commands.
Requires the available Directions
and Connections service plan.
Press
Qto connect to a live
Advisor to:
.Verify account information or
update contact information.
.Get driving directions. Requires
the available Directions and
Connections service plan.
.Receive On-Demand
Diagnostics for a check of the
vehicle’s key operating systems.
.Receive Roadside Assistance.

Black plate (2,1)Chevrolet Silverado Owner Manual - 2013 - crc2 - 8/13/12
14-2 OnStar
Press the OnStar Emergency button>to get a priority connection to an
Emergency Advisor available
24/7 to:
.Get help for an emergency.
.Be a Good Samaritan or
respond to an AMBER Alert.
.Get crisis assistance and
evacuation routes.
OnStar Services
Emergency
With Automatic Crash Response,
the built-in system can automatically
connect to help in most crashes,
even if help cannot be requested.
Press
>to connect to an
Emergency Advisor. GPS
technology is used to identify the
vehicle location and can provide
critical information to emergency
personnel. The Advisor is also
trained to offer critical assistance in
emergency situations before first
responders arrive.
Security
OnStar provides services like Stolen
Vehicle Assistance, Remote Ignition
Block, and Roadside Assistance,
if the vehicle is equipped with these
services. OnStar can unlock the
vehicle doors remotely, if it is equipped with automatic door locks,
and can help police locate the
vehicle if it is stolen.
Navigation
OnStar navigation requires the
Directions and Connections
service plan.
Press
Qto receive directions or
have them sent to the vehicle
navigation screen, if equipped.
Destinations can also be forwarded
to the vehicle from MapQuest.com.
The OnStar mapping database is
continuously updated. Visit
www.onstar.com for coverage maps.
Turn-by-Turn Navigation
1. PressQto connect to a live
Advisor.
2. Request directions.
3. Directions are downloaded to the vehicle.
4. Follow the voice-guided commands.