2012 CHEVROLET SILVERADO AUX

Black plate (105,1)Chevrolet Silverado Owner Manual - 2012
Driving and Operating 9-105
If towing a light‐duty trailer with a
standard four‐way round pin
connector, an adapter is available
from your dealer.
Heavy-DutyTrailer Wiring Harness
Package
For vehicles equipped with heavy
duty trailering, the harness
connector is mounted in the bumper.The seven-wire harness contains
the following trailer circuits:
.Yellow: Left Stop/Turn Signal
.Dark Green: Right Stop/Turn
Signal
.Brown: Taillamps
.White: Ground
.Light Green: Back-up Lamps
.Red: Battery Feed*
.Dark Blue: Trailer Brake*
*The fuses for these two circuits are
installed in the underhood electrical
center, but the wires are not
connected. They should be
connected by your dealer or a
qualified service center. The fuse
and wire for the ITBC is factory
installed and connected if the
vehicle is equipped with an ITBC. The fuse for the battery feed is
not required if the vehicle has an
auxiliary battery. If the vehicle does
not have an auxiliary battery, have
your dealer or authorized service
center install the required fuse.
If charging a remote (non-vehicle)
battery, press the Tow/Haul Mode
button, if equipped, located at the
end of the shift lever. This will boost
the vehicle system voltage and
properly charge the battery. If the
trailer is too light for Tow/Haul
Mode, or the vehicle is not
equipped with Tow/Haul, turn on
the headlamps as a second way
to boost the vehicle system and
charge the battery.

Black plate (119,1)Chevrolet Silverado Owner Manual - 2012
Driving and Operating 9-119
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.
SeeAuxiliary Roof-Mounted Lamp
on page 6‑7 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.

Black plate (49,1)Chevrolet Silverado Owner Manual - 2012
Vehicle Care 10-49
FusesUsage
17 Air Conditioning
Compressor
18 Oxygen Sensors
19 Transmission
Controls (Ignition)
20 Fuel Pump
21 Fuel System Control
Module
22 Not Used
23 Not Used
24 Fuel Injectors,
Ignition Coils
(Left Side)
25 Trailer Park Lamps
26 Driver Side
Park Lamps
27 Passenger Side
Park Lamps
28 Fog Lamps
29 Horn Fuses
Usage
30 Passenger Side
High-Beam
Headlamp
31 Daytime Running
Lamps (DRL)
32 Driver Side
High-Beam
Headlamp
33 Daytime Running
Lamps 2
34 Sunroof
35 Key Ignition System,
Theft Deterrent
System
36 Windshield Wiper
37 SEO B2 Upfitter
Usage (Battery)
38 Electric Adjustable
Pedals
39 Climate Controls
(Battery) Fuses
Usage
40 Airbag System
(Ignition)
41 Amplifier
42 Audio System
43 Miscellaneous
(Ignition), Cruise
Control
44 Not Used
45 Airbag System
(Battery)
46 Instrument Panel
Cluster
47 Power Take-Off
48 Auxiliary Climate
Control (Ignition)
49 Center High-Mounted
Stoplamp (CHMSL)
50 Rear Defogger
51 Heated Mirrors

Black plate (50,1)Chevrolet Silverado Owner Manual - 2012
10-50 Vehicle Care
FusesUsage
52 SEO B1 Upfitter
Usage (Battery)
53 Cigarette Lighter,
Auxiliary Power
Outlet
54 SEO Upfitter Usage
55 Climate Controls
(Ignition)
56 Engine Control
Module, Secondary
Fuel Pump (Ignition)
J-Case Fuses Usage
57 Cooling Fan 1
58 Not Used
59 Heavy Duty Antilock
Brake System
60 Cooling Fan 2
61 Antilock Brake
System 1 J-Case
Fuses Usage
62 Starter
63 Stud 2 (Trailer
Brakes)
64 Left Bussed
Electrical Center 1
65 Not Used
66 Not Used
67 Transfer Case
68 Stud 1 (Trailer
Connector Battery
Power) (Optional -
40A Fuse Required)
69 Mid-Bussed
Electrical Center 1
70 Climate Control
Blower
71 Not Used
72 Left Bussed
Electrical Center 2 Relays
Usage
FAN HI Cooling Fan
High Speed
FAN LO Cooling Fan
Low Speed
FAN CNTRL Cooling Fan
Control
HDLP
LO/HID Low-Beam
Headlamp
FOG LAMP Front Fog Lamps
A/C
CMPRSR Air Conditioning
Compressor
STRTR Starter
PWR/TRN Powertrain
FUEL PMP Fuel Pump
PRK LAMP Parking Lamps
REAR
DEFOG Rear Defogger
RUN/CRNK Switched Power

Black plate (94,1)Chevrolet Silverado Owner Manual - 2012
10-94 Vehicle Care
If your vehicle has a diesel
engine, the remote negative (−)
terminal is the negative (−) post
on the auxiliary battery on the
driver side of the engine
compartment.
For more information on the
location of the remote
positive (+) and remote
negative (−) terminals,
seeEngine Compartment
Overview on page 10‑6
{WARNING
An electric fan can start up even
when the engine is not running
and can injure you. Keep hands,
clothing and tools away from any
underhood electric fan.
{WARNING
Using an open flame near a
battery can cause battery gas to
explode. People have been hurt
doing this, and some have been
blinded. Use a flashlight if you
need more light.
Be sure the battery has enough
water. You do not need to add
water to the battery installed in
your new vehicle. But if a battery
has filler caps, be sure the right
amount of fluid is there. If it is low,
add water to take care of that
first. If you do not, explosive gas
could be present.
Battery fluid contains acid that
can burn you. Do not get it on
you. If you accidentally get it in
your eyes or on your skin, flush
the place with water and get
medical help immediately.
{WARNING
Fans or other moving engine
parts can injure you badly. Keep
your hands away from moving
parts once the engine is running.
6. Check that the jumper cables do not have loose or missing
insulation. If they do, you could
get a shock. The vehicles could
be damaged too.
Before you connect the cables,
here are some basic things you
should know. Positive (+) will go
to positive (+) or to a remote
positive (+) terminal if the vehicle
has one. Negative (−) will go to a
heavy, unpainted metal engine
part or to a remote negative (−)
terminal if the vehicle has one.

Black plate (2,1)Chevrolet Silverado Owner Manual - 2012
i-2 INDEX
AutomaticDoor Locks . . . . . . . . . . . . . . . . . . . . 2-8
Headlamp System . . . . . . . . . . . . . 6-4
Automatic Transmission . . . . . . . 9-38 Fluid . . . . . . . . . . . . . . . . . 10-11, 10-14
Manual Mode . . . . . . . . . . . . . . . . . 9-42
Shift Lock ControlFunction Check . . . . . . . . . . . 10-37
Auxiliary Roof Mounted Lamp . . . . . . . . . . . 6-7
Auxiliary Devices . . . . . . . . . . . . . . 7-34
Axle, Front . . . . . . . . . . . . . . . . . . . . 10-33
Axle, Rear . . . . . . . . . . . . . . . . . . . . 10-34
B
Battery . . . . . . . . . . . . . . . . . . . . . . . 10-31
Jump Starting . . . . . . . . . . . . . . . 10-92
Load Management . . . . . . . . . . . . . 6-9
Power Protection . . . . . . . . . . . . . 6-10
Voltage and ChargingMessages . . . . . . . . . . . . . . . . . . . 5-42
Blade Replacement, Wiper . . . . . . . . . . . . . . . . . . . . . . . 10-39
Bluetooth . . . . . . . . . . . . . . . . . . . . . . 7-52 Brake
Pedal and Adjustable
Throttle . . . . . . . . . . . . . . . . . . . . . . 9-26
Brake System Warning Light . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Brakes . . . . . . . . . . . . . . . . . . . . . . . . 10-28 Antilock . . . . . . . . . . . . . . . . . . . . . . . 9-58
Assist . . . . . . . . . . . . . . . . . . . . . . . . . 9-61
Fluid . . . . . . . . . . . . . . . . . . . . . . . . 10-30
Parking . . . . . . . . . . . . . . . . . . . . . . . 9-60
System Messages . . . . . . . . . . . . 5-42
Braking . . . . . . . . . . . . . . . . . . . . . . . . . 9-4
Break-In, New Vehicle . . . . . . . . . 9-26
Bulb Replacement . . . . . . . . . . . . 10-45 Center High-MountedStoplamp (CHMSL) and
Cargo Lamp . . . . . . . . . . . . . . . 10-44
Fog Lamps . . . . . . . . . . . . . . . . . . . . 6-6
Halogen Bulbs . . . . . . . . . . . . . . 10-42
Headlamp Aiming . . . . . . . . . . . 10-39
Headlamps . . . . . . . . . . . . . . . . . 10-42
Headlamps, Front Turn Signal, Sidemarker, and
Parking Lamps . . . . . . . . . . . . 10-42
License Plate Lamps . . . . . . . 10-45 Bulb Replacement (cont'd)
Pick-up Box Identification
and Fender Marker
Lamps . . . . . . . . . . . . . . . . . . . . 10-43
Taillamps . . . . . . . . . . . . . . . . . . . 10-43
Taillamps, Turn Signal, Stoplamps, and
Back-up Lamps . . . . . . . . . . . 10-44
Buying New Tires . . . . . . . . . . . . . 10-72
C
Calibration . . . . . . . . . . . . . . . . . . . . . . 5-6
California
Fuel Requirements . . . . . . . . . . . 9-77
Perchlorate MaterialsRequirements . . . . . . . . . . . . . . . 10-3
Warning . . . . . . . . . . . . . . . . . . . . . . 10-3
Camera, Rear Vision . . . . . . . . . . 9-70
Canadian Vehicle Owners . . . . . . . . iii
Capacities and Specifications . . . . . . . . . . . . . . . . 12-2
Carbon Monoxide Engine Exhaust . . . . . . . . . . . . . . . 9-36
Tailgate . . . . . . . . . . . . . . . . . . . . . . . 2-10
Winter Driving . . . . . . . . . . . . . . . . 9-14

Black plate (4,1)Chevrolet Silverado Owner Manual - 2012
i-4 INDEX
Devices, Auxiliary . . . . . . . . . . . . . 7-34
Diagnostics, OnStar®. . . . . . . . . . 14-5
Distracted Driving . . . . . . . . . . . . . . . 9-2
Dome Lamps . . . . . . . . . . . . . . . . . . . 6-8
Door Ajar Messages . . . . . . . . . . . . . . . 5-43
Delayed Locking . . . . . . . . . . . . . . . 2-8
Locks . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Power Locks . . . . . . . . . . . . . . . . . . . 2-8
Rear Doors . . . . . . . . . . . . . . . . . . . . 2-9
Drive Belt Routing, Engine . . . . . 12-6
Driver Information
Center (DIC) . . . . . . . . . . . . . . . . . 5-32
Driving Characteristics andTowing Tips . . . . . . . . . . . . . . . . . 9-82
Defensive . . . . . . . . . . . . . . . . . . . . . . 9-3
Drunk . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3
For Better Fuel Economy . . . . . 1-34
Highway Hypnosis . . . . . . . . . . . . 9-12
Hill and Mountain Roads . . . . . . 9-13
If the Vehicle is Stuck . . . . . . . . . 9-16
Loss of Control . . . . . . . . . . . . . . . . 9-5
Off-Road . . . . . . . . . . . . . . . . . . . . . . 9-6
Off-Road Recovery . . . . . . . . . . . . 9-5 Driving (cont'd)
Vehicle Load Limits . . . . . . . . . . . 9-17
Wet Roads . . . . . . . . . . . . . . . . . . . 9-12
Winter . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Dual Automatic Climate Control System . . . . . . . . . . . . . . . . 8-5
Dual Tire Rotation . . . . . . . . . . . . . . . . . . . . 10-71
DVD
Rear Seat EntertainmentSystem . . . . . . . . . . . . . . . . . . . . . . 7-40
DVD/CD Player . . . . . . . . . . . . . . . . 7-23
E
E85 Fuel . . . . . . . . . . . . . . . . . . . . . . . 9-78
Electrical Equipment, Add-On . . . . . . . . . . . . . . . . . . . . . 9-115
Electrical System Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-47
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-47
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-51
Overload . . . . . . . . . . . . . . . . . . . 10-46 Emergency, OnStar
®. . . . . . . . . . 14-2
Engine
Air Cleaner/Filter . . . . . . . . . . . 10-17
Check and Service EngineSoon Light . . . . . . . . . . . . . . . . . . 5-24
Compartment Overview . . . . . . . 10-6
Coolant . . . . . . . . . . . . . . . . . . . . . 10-20
Coolant Heater . . . . . . . . . . . . . . . 9-32
Coolant Temperature Gauge . . . . . . . . . . . . . . . . . . . . . . 5-17
Cooling System . . . . . . . . . . . . . 10-19
Cooling System
Messages . . . . . . . . . . . . . . . . . . . 5-44
Drive Belt Routing . . . . . . . . . . . . 12-6
Exhaust . . . . . . . . . . . . . . . . . . . . . . 9-36
Fan . . . . . . . . . . . . . . . . . . . . . . . . . 10-26
Oil Pressure Gauge . . . . . . . . . . 5-16
Overheated Protection Operating Mode . . . . . . . . . . . 10-26
Overheating . . . . . . . . . . . . . . . . 10-23
Power Messages . . . . . . . . . . . . . 5-46
Pressure Light . . . . . . . . . . . . . . . . 5-30
Running While Parked . . . . . . . . 9-37
Starting . . . . . . . . . . . . . . . . . . . . . . . 9-29

Black plate (7,1)Chevrolet Silverado Owner Manual - 2012
INDEX i-7
J
Jump Starting . . . . . . . . . . . . . . . . . 10-92
K
Key and Lock Messages . . . . . . . 5-46
Keyless EntryRemote (RKE) System . . . . . . . . 2-3
Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
L
Labeling, Tire Sidewall . . . . . . . . 10-55
Lamp Messages . . . . . . . . . . . . . . . 5-46
Lamps Auxiliary RoofMounted Lamp . . . . . . . . . . . . . . . 6-7
Cargo . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Daytime Running (DRL) . . . . . . . 6-3
Dome . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Exterior Controls . . . . . . . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . . . . . . . . . . . . . . . . . . 6-3
License Plate . . . . . . . . . . . . . . . 10-45
Malfunction Indicator . . . . . . . . . 5-24 Lamps (cont'd)
Pick-up Box Identification
and Fender Marker . . . . . . . . 10-43
Reading . . . . . . . . . . . . . . . . . . . . . . . 6-9
Taillamps . . . . . . . . . . . . . . . . . . . 10-43
Lap Belt . . . . . . . . . . . . . . . . . . . . . . . 3-20
Lap-Shoulder Belt . . . . . . . . . . . . . 3-15
LATCH System Replacing Parts after a
Crash . . . . . . . . . . . . . . . . . . . . . . . 3-60
LATCH, Lower Anchors and Tethers for Children . . . . . . . . . . 3-51
Light StabiliTrak
®OFF . . . . . . . . . . . . . 5-28
Lighter, Cigarette . . . . . . . . . . . . . . 5-11
Lighting Entry . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Exit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-9
Illumination Control . . . . . . . . . . . . 6-8
Lights Airbag On-Off . . . . . . . . . . . . . . . . . 5-20
Airbag Readiness . . . . . . . . . . . . . 5-20
Antilock Brake System(ABS) Warning . . . . . . . . . . . . . . 5-27 Lights (cont'd)
Brake System Warning . . . . . . . 5-26
Charging System . . . . . . . . . . . . . 5-23
Cruise Control . . . . . . . . . . . . . . . . 5-31
Engine Oil Pressure . . . . . . . . . . 5-30
Flash-to-Pass . . . . . . . . . . . . . . . . . . 6-3
Four-Wheel-Drive . . . . . . . . . . . . . 5-28
Front Fog Lamp . . . . . . . . . . . . . . 5-31
High-Beam On . . . . . . . . . . . . . . . . 5-31
High/Low Beam Changer . . . . . . 6-3
Low Fuel Warning . . . . . . . . . . . . 5-30
Safety Belt Reminders . . . . . . . . 5-19
Security . . . . . . . . . . . . . . . . . . . . . . 5-30
Tire Pressure . . . . . . . . . . . . . . . . . 5-29
Tow/Haul Mode . . . . . . . . . . . . . . . 5-28
Traction Control System
(TCS)/StabiliTrak
®. . . . . . . . . . 5-29
Locking Rear Axle . . . . . . . . . . . . . 9-65
Locks
Automatic Door . . . . . . . . . . . . . . . . 2-8
Delayed Locking . . . . . . . . . . . . . . . 2-8
Door . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-7
Lockout Protection . . . . . . . . . . . . . 2-8
Power Door . . . . . . . . . . . . . . . . . . . . 2-8
Safety . . . . . . . . . . . . . . . . . . . . . . . . . 2-8