Page 569 of 584

Black plate (7,1)Chevrolet Silverado Owner Manual - 2012
OnStar 14-7
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some of
the OnStar services, like Remote
Door Unlock and Stolen Vehicle
Assistance. You will be prompted
to change the PIN the first time
when speaking with an Advisor.
To change the OnStar PIN, call
OnStar and provide the Advisor
with the current number.
Warranty
OnStar equipment may be
warranted as part of the new-vehicle
limited warranty. The manufacturer
of the vehicle furnishes detailed
warranty information.
Languages
The vehicle can be programmed
to respond in French or Spanish.
Push
Qand ask an Advisor.
Advisors can speak French or
Spanish.
Potential Issues
Some OnStar services are disabled
after five days. OnStar cannot
perform Remote Door Unlock or
Stolen Vehicle Assistance after the
vehicle has been off continuously
for five days. After five days, OnStar
can contact Roadside Assistance
and a locksmith to help gain access
to the vehicle.
Global Positioning
System (GPS)
.Obstruction of the GPS can
occur in a large city with tall
buildings; in parking garages;
around airports; in tunnels,
underpasses, or parking
garages; or in an area with very
dense trees. If GPS signals are
not available, the OnStar system
should still operate to call
OnStar. However, OnStar could
have difficulty identifying the
exact location.
.In emergency situations, OnStar
can use the last stored GPS
location to send to emergency
responders.
.A temporary loss of GPS can
cause loss of the ability to send
a Turn-by-Turn Navigation route.
The Advisor may give a verbal
route or may ask for a call back
after the vehicle is driven into an
open area.
Page 578 of 584

Black plate (8,1)Chevrolet Silverado Owner Manual - 2012
i-8 INDEX
Loss of Control . . . . . . . . . . . . . . . . . 9-5
Low Fuel Warning Light . . . . . . . . 5-30
Lower Anchors andTethers for Children
(LATCH System) . . . . . . . . . . . . . 3-51
Lumbar Adjustment . . . . . . . . . . . . . 3-6 Front Seats . . . . . . . . . . . . . . . . . . . . 3-6
M
Maintenance
Records . . . . . . . . . . . . . . . . . . . . .11-17
Maintenance Schedule Recommended Fluids
and Lubricants . . . . . . . . . . . . .11-13
Transfer Case . . . . . . . . . . . . . . . . 9-45
Malfunction Indicator Lamp . . . . 5-24
Manual Mirrors . . . . . . . . . . . . . . . . 2-14
Manual Mode . . . . . . . . . . . . . . . . . . 9-42
Manual Transmission . . . . . . . . . . 9-44 Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-17
Manual Windows . . . . . . . . . . . . . . 2-18
Memory Features . . . . . . . . . . . . . . 1-13
Memory Seats . . . . . . . . . . . . . . . . . . 3-8 Messages
Airbag System . . . . . . . . . . . . . . . . 5-48
Anti-theft Alarm System . . . . . . . 5-48
Battery Voltage and
Charging . . . . . . . . . . . . . . . . . . . . 5-42
Brake System . . . . . . . . . . . . . . . . 5-42
Door Ajar . . . . . . . . . . . . . . . . . . . . . 5-43
Engine Cooling System . . . . . . . 5-44
Engine Oil . . . . . . . . . . . . . . . . . . . . 5-45
Engine Power . . . . . . . . . . . . . . . . 5-46
Fuel System . . . . . . . . . . . . . . . . . . 5-46
Key and Lock . . . . . . . . . . . . . . . . . 5-46
Lamp . . . . . . . . . . . . . . . . . . . . . . . . . 5-46
Object Detection System . . . . . 5-47
Ride Control System . . . . . . . . . . 5-47
Starting the Vehicle . . . . . . . . . . . 5-49
Tire . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-49
Transmission . . . . . . . . . . . . . . . . . 5-50
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-42
Vehicle Reminder . . . . . . . . . . . . . 5-50
Washer Fluid . . . . . . . . . . . . . . . . . 5-51 Mirrors
Automatic Dimming
Rearview . . . . . . . . . . . . . . . . . . . . 2-17
Convex . . . . . . . . . . . . . . . . . . . . . . . 2-14
Folding . . . . . . . . . . . . . . . . . . . . . . . 2-15
Heated . . . . . . . . . . . . . . . . . . . . . . . 2-16
Manual . . . . . . . . . . . . . . . . . . . . . . . 2-14
Manual Rearview . . . . . . . . . . . . . 2-17
Park Tilt . . . . . . . . . . . . . . . . . . . . . . 2-17
Power . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Trailer Tow . . . . . . . . . . . . . . . . . . . . 2-15
Monitor System, Tire Pressure . . . . . . . . . . . . . . . . . . . . 10-64
N
NavigationVehicle Data Recordingand Privacy . . . . . . . . . . . . . . . 13-21
Navigation, OnStar
®. . . . . . . . . . . 14-2
New Vehicle Break-In . . . . . . . . . . 9-26
Noise Control System . . . . . . . . 10-36
Page 579 of 584

Black plate (9,1)Chevrolet Silverado Owner Manual - 2012
INDEX i-9
O
Object Detection SystemMessages . . . . . . . . . . . . . . . . . . . . 5-47
Odometer . . . . . . . . . . . . . . . . . . . . . . 5-14 Trip . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Off-Road . . . . . . . . . . . . . . . . . . . . . . . 9-6 Driving . . . . . . . . . . . . . . . . . . . . . . . . . 9-6
Recovery . . . . . . . . . . . . . . . . . . . . . . 9-5
Oil Engine . . . . . . . . . . . . . . . . . . . . . . . . 10-7
Engine Oil Life System . . . . . 10-10
Engine Oil PressureGauge . . . . . . . . . . . . . . . . . . . . . . 5-16
Messages . . . . . . . . . . . . . . . . . . . . 5-45
Pressure Light . . . . . . . . . . . . . . . . 5-30
Older Children, Restraints . . . . . 3-42
Online Owner Center . . . . . . . . . . 13-6
OnStar
®
Additional Information . . . . . . . . 14-5
Connections . . . . . . . . . . . . . . . . . . 14-4
Diagnostics . . . . . . . . . . . . . . . . . . . 14-5
Emergency . . . . . . . . . . . . . . . . . . . 14-2
Navigation . . . . . . . . . . . . . . . . . . . . 14-2
Overview . . . . . . . . . . . . . . . . . . . . . 14-1
Security . . . . . . . . . . . . . . . . . . . . . . 14-2 OnStar
®System . . . . . . . . . . . . . . . 1-35
Operation, Infotainment
System . . . . . . . . . . . . . . . . . . . . . . . . 7-3
Ordering Service Publications . . . . . . . . 13-17
Outlets Power . . . . . . . . . . . . . . . . . . . . . . . . 5-10
Overheated Engine Protection
Operating Mode . . . . . . . . . . . . . 10-26
Overheating, Engine . . . . . . . . . . 10-23
Overview, OnStar
®. . . . . . . . . . . . 14-1
P
Park
Shifting into . . . . . . . . . . . . . . . . . . . 9-33
Shifting out of . . . . . . . . . . . . . . . . . 9-35
Park Tilt Mirrors . . . . . . . . . . . . . . . . 2-17
Parking . . . . . . . . . . . . . . . . . . . . . . . . 9-35
Assist, Ultrasonic . . . . . . . . . . . . . 9-68
Brake . . . . . . . . . . . . . . . . . . . . . . . . . 9-60
Brake and P (Park)Mechanism Check . . . . . . . . 10-38
Over Things That Burn . . . . . . . 9-35 Passenger Airbag Status
Indicator . . . . . . . . . . . . . . . . . . . . . 5-22
Passenger Sensing System . . . . . . . . . . . . . . . . . . . . . . . 3-34
Perchlorate Materials Requirements, California . . . . . 10-3
Personalization
Vehicle . . . . . . . . . . . . . . . . . . . . . . . 5-52
Phone Bluetooth . . . . . . . . . . . . . . . . . . . . . 7-52
Pick-up Box Identification
and Fender Marker
Lamps . . . . . . . . . . . . . . . . . . . . . . 10-43
Pickup Conversion to Chassis Cab . . . . . . . . . . . . . . . . 9-119
Power
Door Locks . . . . . . . . . . . . . . . . . . . . 2-8
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . 2-15
Outlets . . . . . . . . . . . . . . . . . . . . . . . 5-10
Protection, Battery . . . . . . . . . . . . 6-10
Retained Accessory (RAP) . . . 9-32
Seat Adjustment . . . . . . . . . . . . . . . 3-5
Steering Fluid . . . . . . . . . . . . . . . 10-27
Windows . . . . . . . . . . . . . . . . . . . . . 2-18