2012 CHEVROLET SILVERADO immobilizer

Black plate (1,1)Chevrolet Silverado Owner Manual - 2012
Keys, Doors, and Windows 2-1
Keys, Doors, and
Windows
Keys and Locks
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
Remote Keyless Entry (RKE)System . . . . . . . . . . . . . . . . . . . . . . 2-3
Remote Keyless Entry (RKE) System Operation . . . . . . . . . . . 2-3
Remote Vehicle Start . . . . . . . . . 2-5
Door Locks . . . . . . . . . . . . . . . . . . . 2-7
Power Door Locks . . . . . . . . . . . . 2-8
Delayed Locking . . . . . . . . . . . . . . 2-8
Automatic Door Locks . . . . . . . . . 2-8
Lockout Protection . . . . . . . . . . . . 2-8
Safety Locks . . . . . . . . . . . . . . . . . . 2-8
Doors
Rear Doors (Extended Cab) . . . . . . . . . . . . . . 2-9
Tailgate . . . . . . . . . . . . . . . . . . . . . . 2-10
Vehicle Security
Vehicle Security . . . . . . . . . . . . . . 2-11
Anti-theft Alarm System . . . . . . 2-11
Immobilizer . . . . . . . . . . . . . . . . . . 2-12
Immobilizer Operation . . . . . . . 2-12
Exterior Mirrors
Convex Mirrors . . . . . . . . . . . . . . 2-14
Manual Mirrors . . . . . . . . . . . . . . . 2-14
Trailer-Tow Mirrors . . . . . . . . . . . 2-15
Power Mirrors . . . . . . . . . . . . . . . . 2-15
Folding Mirrors . . . . . . . . . . . . . . . 2-15
Heated Mirrors . . . . . . . . . . . . . . . 2-16
Park Tilt Mirrors . . . . . . . . . . . . . . 2-17
Interior Mirrors
Manual Rearview Mirror . . . . . . 2-17
Automatic Dimming Rearview Mirror . . . . . . . . . . . . . . . . . . . . . . . 2-17
Windows
Windows . . . . . . . . . . . . . . . . . . . . . 2-18
Manual Windows . . . . . . . . . . . . 2-18
Power Windows . . . . . . . . . . . . . 2-18
Rear Windows . . . . . . . . . . . . . . . 2-20
Sun Visors . . . . . . . . . . . . . . . . . . . 2-20
Roof
Sunroof (Extended Cab) . . . . . 2-20
Sunroof (Crew Cab) . . . . . . . . . 2-22

Black plate (12,1)Chevrolet Silverado Owner Manual - 2012
2-12 Keys, Doors, and Windows
The theft-deterrent system will not
activate if the doors are locked with
the key or the manual door lock.
It activates only if you use the
power door lock switch or the RKE
transmitter. The vehicle can be
started with the correct key if the
alarm is set off.
To avoid setting off the alarm by
accident:
.If you do not want to activate
the theft-deterrent system,
the vehicle should be locked
with the door key after the doors
are closed.
.Always unlock a door with the
RKE transmitter.
If the alarm is set off, press unlock
on the RKE transmitter or place the
key in the ignition and turn it to
START.
Testing the Alarm
To test the alarm:
1. Lower the driver window and open the driver door.
2. Press lock on the RKE transmitter.
3. Close the door and wait for the security light to go out.
4. Reach in through the window, unlock the door with the manual
door lock, and open the door.
This should set off the alarm.
If the alarm does not sound when
it should but the headlamps flash,
check to see if the horn works.
The horn fuse may be blown.
To replace the fuse, see Fuses and
Circuit Breakers on page 10‑47.
If the alarm does not sound or the
headlamps do not flash, see your
dealer for service.
Immobilizer
See Radio Frequency Statement on
page 13‑21 for information
regarding Part 15 of the Federal
Communications Commission (FCC)
rules and Industry Canada
Standards RSS-GEN/210/220/310.
Immobilizer Operation
This vehicle has PASS-Key®III+
(Personalized Automotive Security
System) theft-deterrent system.
PASS-Key III+ is a passive
theft-deterrent system.
The system is automatically armed
when the key is removed from the
ignition.
The system is automatically
disarmed when the key is turned
to ON/RUN, ACC/ACCESSORY,
or START from the LOCK/OFF
position.

Black plate (48,1)Chevrolet Silverado Owner Manual - 2012
5-48 Instruments and Controls
TRACTION XX
STABILITRAK XX
This message displays when the
traction control and/or StabiliTrak
systems have been turned on or off.
Adjust your driving accordingly.
To limit wheel spin and realize
the full benefits of the stability
enhancement system, you should
normally leave StabiliTrak on.
However, you should turn
StabiliTrak off if the vehicle gets
stuck in sand, mud, ice, or snow
and you want to rock the vehicle to
attempt to free it, or if you are
driving in extreme off-road
conditions and require more wheel
spin. SeeIf the Vehicle Is Stuck on
page 9‑16. To turn the StabiliTrak
system on or off, see StabiliTrak
®
System on page 9‑62.
STABILITRAK OFF may also
display when the stability control
has been automatically disabled. There are several conditions that
can cause this message to appear.
.One condition is overheating,
which could occur if StabiliTrak
activates continuously for an
extended period of time.
.The message also displays if the
brake system warning light is on.
See
Brake System Warning
Light on page 5‑26.
.The message could display if the
stability system takes longer
than usual to complete its
diagnostic checks due to driving
conditions.
.The message displays if an
engine or vehicle related
problem has been detected
and the vehicle needs service.
See your dealer.
The message turns off as soon as
the conditions that caused the
message to be displayed are no
longer present.
Airbag System Messages
SERVICE AIR BAG
This message displays if there is a
problem with the airbag system.
Have your dealer inspect the
system for problems. See Airbag
Readiness Light on page 5‑20 and
Airbag System on page 3‑23 for
more information.
Anti-theft Alarm System
Messages
SERVICE THEFT DETERRENT
SYSTEM
This message displays when there
is a problem with the theft-deterrent
system. The vehicle may or may not
restart so you may want to take the
vehicle to your dealer before turning
off the engine. See Immobilizer
Operation on page 2‑12 for more
information.

Black plate (6,1)Chevrolet Silverado Owner Manual - 2012
i-6 INDEX
G
Garage Door Opener . . . . . . . . . . 5-60Programming . . . . . . . . . . . . . . . . . 5-60
Gasoline Specifications . . . . . . . . . . . . . . . . . 9-77
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 5-17
Engine Oil Pressure . . . . . . . . . . 5-16
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Odometer . . . . . . . . . . . . . . . . . . . . . 5-14
Speedometer . . . . . . . . . . . . . . . . . 5-14
Tachometer . . . . . . . . . . . . . . . . . . . 5-14
Trip Odometer . . . . . . . . . . . . . . . . 5-14
Voltmeter . . . . . . . . . . . . . . . . . . . . . 5-18
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 5-12
General Information Service and Maintenance . . . . . 11-1
Towing . . . . . . . . . . . . . . . . . . . . . . . . 9-82
Vehicle Care . . . . . . . . . . . . . . . . . . 10-2
Glass Replacement . . . . . . . . . . . 10-39
Glove Box . . . . . . . . . . . . . . . . . . . . . . 4-1
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . 13-7
H
Halogen Bulbs . . . . . . . . . . . . . . . . 10-42
Hazard Warning Flashers . . . . . . . 6-5
Head Restraints . . . . . . . . . . . . . . . . 3-2
Headlamps
Aiming . . . . . . . . . . . . . . . . . . . . . . 10-39
Automatic . . . . . . . . . . . . . . . . . . . . . . 6-4
Bulb Replacement . . . . . . . . . . 10-42
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . . 6-3
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
Headlamps, Front Turn
Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-42
High-Beam On Light . . . . . . . . . . 5-31
High/Low Beam Changer . . . . . . 6-3
Heated and Ventilated Front Seats . . . . . . . . . . . . . . . . . . 3-10
Heated Mirrors . . . . . . . . . . . . . . . . . 2-16
Heater Engine Coolant . . . . . . . . . . . . . . . 9-32
Heating and Air Conditioning . . . . . . . . . . . . . . . 8-1, 8-4
High-Beam On Light . . . . . . . . . . . 5-31 High-Speed Operation . . . . . . . . 10-63
Highway Hypnosis . . . . . . . . . . . . . 9-12
Hill and Mountain Roads . . . . . . . 9-13
Hill Start Assist (HSA) . . . . . . . . . 9-62
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . 10-5
Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
How to Wear Safety Belts
Properly . . . . . . . . . . . . . . . . . . . . . . 3-14
Hydraulic Clutch . . . . . . . . . . . . . . 10-17
I
Idle System Fast . . . . . . . . . . . . . . . . . . . . . . . . . . 9-31
Ignition Positions . . . . . . . . . . . . . . 9-27
Ignition Transmission Lock Check . . . . . . . . . . . . . . . . . . . . . . . 10-38
Immobilizer . . . . . . . . . . . . . . . . . . . . 2-12
Infants and Young Children, Restraints . . . . . . . . . . . . . . . . . . . . 3-44
Infotainment . . . . . . . . . . . . . . . . . . . . 7-1
Instrument Cluster . . . . . . . . . . . . . 5-13
Instrument Panel Storage Area . . . . . . . . . . . . . . . . . . 4-1
Introduction . . . . . . . . . . . . . . . . . . . . . . . iii

Black plate (12,1)Chevrolet Silverado Owner Manual - 2012
i-12 INDEX
Start Vehicle, Remote . . . . . . . . . . 2-5
Starter Switch Check . . . . . . . . . 10-36
Starting the Engine . . . . . . . . . . . . 9-29
Starting the VehicleMesssages . . . . . . . . . . . . . . . . . . . 5-49
Steering . . . . . . . . . . . . . . . . . . . . . . . . 9-4 Fluid, Power . . . . . . . . . . . . . . . . 10-27
Wheel Adjustment . . . . . . . . . . . . . 5-2
Wheel Controls . . . . . . . . . . . . . . . . 5-3
Stoplamps and Back-up Lamps Bulb Replacement . . . . . . . . . . 10-44
Storage Areas Armrest . . . . . . . . . . . . . . . . . . . . . . . . 4-1
Center Console . . . . . . . . . . . . . . . . 4-2
Glove Box . . . . . . . . . . . . . . . . . . . . . 4-1
Instrument Panel . . . . . . . . . . . . . . 4-1
Stuck Vehicle . . . . . . . . . . . . . . . . . . 9-16
Sun Visors . . . . . . . . . . . . . . . . . . . . . 2-20
Sunroof . . . . . . . . . . . . . . . . . . 2-20, 2-22
Switches Airbag On-Off . . . . . . . . . . . . . . . . . 3-30
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . iv
System Infotainment . . . . . . . . . . . . . . . . . . . 7-1
Noise Control . . . . . . . . . . . . . . . 10-36T
Tachometer . . . . . . . . . . . . . . . . . . . . 5-14
Tailgate . . . . . . . . . . . . . . . . . . . . . . . . 2-10
Taillamps . . . . . . . . . . . . . . . . . . . . . 10-43Bulb Replacement . . . . . . . . . . 10-44
Text Telephone (TTY) Users . . . 13-6
Theft-Deterrent Systems . . . . . . . 2-12 Immobilizer . . . . . . . . . . . . . . . . . . . 2-12
Throttle, Adjustable . . . . . . . . . . . . 9-26
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-8
Tires Buying New Tires . . . . . . . . . . . 10-72
Chains . . . . . . . . . . . . . . . . . . . . . . 10-78
Changing . . . . . . . . . . . . . . . . . . . 10-80
Designations . . . . . . . . . . . . . . . 10-57
Different Size . . . . . . . . . . . . . . . 10-74
Dual Rotation . . . . . . . . . . . . . . . 10-71
Full-Size Spare . . . . . . . . . . . . . 10-91
If a Tire Goes Flat . . . . . . . . . . 10-79
Inflation Monitor System . . . . 10-65
Inspection . . . . . . . . . . . . . . . . . . 10-68
Messages . . . . . . . . . . . . . . . . . . . . 5-49
Pressure . . . . . . . . . . . . . . . . . . . . 10-63 Tires (cont'd)
Pressure Light . . . . . . . . . . . . . . . . 5-29
Pressure Monitor System . . . 10-64
Rotation . . . . . . . . . . . . . . . . . . . . 10-69
Sidewall Labeling . . . . . . . . . . . 10-55
Terminology and
Definitions . . . . . . . . . . . . . . . . . 10-59
Uniform Tire Quality Grading . . . . . . . . . . . . . . . . . . . 10-74
Wheel Alignment and Tire Balance . . . . . . . . . . . . . . . . . . . 10-76
Wheel Replacement . . . . . . . . 10-77
When It Is Time for New Tires . . . . . . . . . . . . . . . . . . . . . . 10-71
Tow/Haul Mode . . . . . . . . . . . . . . . . 9-43
Tow/Haul Mode Light . . . . . . . . . . 5-28
Towing Driving Characteristics . . . . . . . . 9-82
Equipment . . . . . . . . . . . . . . . . . . 9-102
General Information . . . . . . . . . . 9-82
Recreational Vehicle . . . . . . . . 10-97
Trailer . . . . . . . . . . . . . . . . . . . . . . . . 9-86
Trailer Sway
Control (TSC) . . . . . . . . . . . . . .9-114
Vehicle . . . . . . . . . . . . . . . . . . . . . 10-97