2012 CHEVROLET SILVERADO fog light

Black plate (10,1)Chevrolet Silverado Owner Manual - 2012
6-10 Lighting
The battery can be discharged at
idle if the electrical loads are very
high. This is true for all vehicles.
This is because the generator
(alternator) may not be spinning
fast enough at idle to produce all of
the power needed for very high
electrical loads.
A high electrical load occurs when
several of the following are on,
such as: headlamps, high beams,
fog lamps, rear window defogger,
climate control fan at high speed,
heated seats, engine cooling fans,
trailer loads, and loads plugged into
accessory power outlets.
EPM works to prevent excessive
discharge of the battery. It does this
by balancing the generator's output
and the vehicle's electrical needs.It can increase engine idle speed to
generate more power whenever
needed. It can temporarily reduce
the power demands of some
accessories.
Normally, these actions occur in
steps or levels, without being
noticeable. In rare cases at the
highest levels of corrective action,
this action may be noticeable to the
driver. If so, a DIC message might
be displayed, such as BATTERY
SAVER ACTIVE, BATTERY
VOLTAGE LOW, or LOW BATTERY.
If one of these messages displays,
it is recommended that the driver
reduce the electrical loads as much
as possible. See
Driver Information
Center (DIC) on page 5‑32.Battery Power Protection
This feature shuts off the dome and
reading lamps, if they are left on for
more than 10 minutes after the
ignition is turned off. The cargo
lamp shuts off after 20 minutes.
This prevents the battery from
running down.

Black plate (2,1)Chevrolet Silverado Owner Manual - 2012
8-2 Climate Controls
Air Delivery Mode Control:Turn
clockwise or counterclockwise to
change the direction of the airflow
inside the vehicle. The knob can be
positioned between two modes to
select a combination of those
modes.
Select from the following:
H(Vent): Air is directed to the
instrument panel outlets.
)(Bi-Level): Air is divided
between the instrument panel and
floor outlets.
6(Floor): Air is directed to the
floor outlets, with some air directed
to the windshield and side window
outlets. In this mode, the system
automatically selects outside air.
Recirculation cannot be selected in
floor mode.
-(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor
outlets, and side window vents.
0(Defrost): This mode removes
fog or frost from the windshield
more quickly. Air is directed to the
windshield and the side window
vents, with some air directed to
the floor vents. The system
automatically forces outside air
into the vehicle.
The recirculation mode cannot be
selected in the defog or defrost
mode. When either mode is
selected, the system runs the air
conditioning compressor, unless the
outside temperature is close to
freezing.
Do not drive the vehicle until all the
windows are clear.
:(Outside Air): Press to
turn the outside air mode on.
An indicator light comes on to
show that outside air is on.
In this mode outside air circulates
throughout the vehicle. The outside
air mode can be used with all
modes, but it cannot be used with
the recirculation mode.
?(Recirculation): Press to
turn the recirculation mode on.
An indicator light comes on to show
that recirculation is on.
This mode recirculates and helps
to quickly cool the air inside the
vehicle. It can be used to help
prevent outside air and odors from
entering the vehicle.
The recirculation mode cannot be
used with floor, defog or defrost
modes. If recirculation is selected
with one of these modes, the
indicator light flashes three times
and then turns off. While in
recirculation mode the windows may
fog when the weather is cold and

Black plate (3,1)Chevrolet Silverado Owner Manual - 2012
Climate Controls 8-3
While in recirculation mode the
windows may fog when the weather
is cold and damp. To clear the fog,
select either the defog or defrost
mode and increase the fan speed.
The recirculation mode can be
turned off by pressing the outside
air button, or by turning off the
ignition.
#(Air Conditioning):Press to
turn the air conditioning system on
or off. An indicator light comes on to
show that the air conditioning is on.
The air conditioning can be selected
in any mode as long as the fan
switch is on.
The air conditioning system
removes moisture from the air,
so a small amount of water might
drip under the vehicle while idling
or after turning off the engine.
This is normal.
Rear Window Defogger
For vehicles with a rear window
defogger, a warming grid is used to
remove fog from the rear window.
1(Rear): Press to turn the
rear window defogger on or off.
An indicator light on the button
comes on to show that the rear
window defogger is on.
The rear window defogger only
works when the ignition is in
ON/RUN. The rear window
defogger stays on for approximately
10 minutes after the button is
pressed, unless the ignition is
turned to ACC/ACCESSORY or
LOCK/OFF. The defogger can also
be turned off by turning off the
engine. Notice:
Do not use anything
sharp on the inside of the rear
window. If you do, you could cut
or damage the warming grid, and
the repairs would not be covered
by the vehicle warranty. Do not
attach a temporary vehicle
license, tape, a decal, or anything
similar to the defogger grid.

Black plate (8,1)Chevrolet Silverado Owner Manual - 2012
8-8 Climate Controls
Manual Operation
D C(Fan Control):Press these
buttons to increase or decrease the
fan speed.
Pressing either fan button while in
automatic control places the fan
under manual control. The fan
setting remains displayed and the
AUTO light turns off. The air
delivery mode remains under
automatic control.
H G(Air Delivery Mode Control):
Press these buttons to change the
direction of the airflow in the vehicle.
Repeatedly press either button until
the desired mode appears on the
display.
Pressing either mode button while
the system is off changes the air
delivery mode without turning the
system on.
Pressing either mode button
while in automatic control places
the mode under manual control. The air delivery mode setting
displays and the AUTO light turns
off. The fan remains under
automatic control.
H(Vent):
Air is directed to the
instrument panel outlets.
)(Bi-Level): Air is divided
between the instrument panel and
floor outlets. Some air is directed
toward the windshield and side
window outlets.
6(Floor): Air is directed to the
floor outlets, with some to the
windshield, side window outlets, and
second row floor outlets. In this
mode, the system automatically
selects outside air.
-(Defog): This mode clears the
windows of fog or moisture. Air is
directed to the windshield, floor
outlets, and side window vents.
In this mode, the system turns off
recirculation and runs the air
conditioning compressor unless the
outside temperature is close to freezing. The recirculation mode
cannot be selected while in the
defrost mode.
0(Defrost):
This mode removes
fog or frost from the windshield
more quickly. Air is directed to the
windshield and side window vents,
with some directed to the floor
vents. In this mode, the system
automatically forces outside air
into the vehicle and runs the air
conditioning compressor unless the
outside temperature is close to
freezing. The recirculation mode
cannot be selected while in the
defrost mode.
The passenger temperature control
cannot be activated while in
defrost mode. If the PASS button is
pressed, the button indicator flashes
three times and will not work. If the
passenger temperature buttons are
adjusted, the driver temperature
indicator changes. The passenger
temperature will not be displayed.

Black plate (9,1)Chevrolet Silverado Owner Manual - 2012
Climate Controls 8-9
If vent, bi-level, or floor mode is
selected again, the climate control
system displays the previous
temperature settings.
Do not drive the vehicle until all
windows are clear.
#(Air Conditioning):Press to
turn the air conditioning (A/C)
compressor on and off. An indicator
light comes on to show that the air
conditioning is on.
If this button is pressed when
the air conditioning compressor
is unavailable due to outside
conditions, the indicator flashes
three times and then turns off.
If the air conditioning is on and the
outside temperature drops below a
temperature which is too cool for air
conditioning to be effective, the air
conditioning light turns off to show
that the air conditioning mode has
been canceled. On hot days, open the windows long
enough to let hot inside air escape.
This helps to reduce the time it
takes for the vehicle to cool down.
It also helps the system to operate
more efficiently.
The air conditioning system
removes moisture from the air, so a
small amount of water might drip
under the vehicle while idling or
after turning off the engine. This is
normal.
@(Recirculation):
Press to
turn the recirculation mode on.
An indicator light comes on to show
that recirculation is on.
This mode recirculates and helps
to quickly cool the air inside the
vehicle. It can be used to help
prevent outside air and odors from
entering the vehicle.
The recirculation mode cannot be
used with floor, defog, or defrost
modes. If recirculation is selected
with one of those modes, the indicator light flashes three times
and then turns off. The air
conditioning compressor also comes
on when this mode is activated.
While in recirculation mode, the
windows may fog when the weather
is cold and damp. To clear the fog,
select either the defog or defrost
mode and increase the fan speed.
The recirculation mode can be
turned off by pressing the outside
air button, or by turning off the
ignition.;(Outside Air):
Press to turn the
outside air mode on. An indicator
light on the button comes on to
show that outside is on. When
selected, air from outside the
vehicle circulates throughout the
vehicle. The recirculation mode
cannot be used with the outside
air mode.

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 (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 (5,1)Chevrolet Silverado Owner Manual - 2012
INDEX i-5
Engine OilLife System . . . . . . . . . . . . . . . . . 10-10
Messages . . . . . . . . . . . . . . . . . . . . 5-45
Entry Lighting . . . . . . . . . . . . . . . . . . . 6-9
Equipment, Towing . . . . . . . . . . . 9-102
Event Data Recorders . . . . . . . . 13-20
Exit Lighting . . . . . . . . . . . . . . . . . . . . 6-9
Extender, Safety Belt . . . . . . . . . . 3-21
Exterior Lamp Controls . . . . . . . . . 6-1
Exterior Lamps Off Reminder . . . 6-3
F
Fan Engine . . . . . . . . . . . . . . . . . . . . . . 10-26
Fast Idle System . . . . . . . . . . . . . . . 9-31
Features Memory . . . . . . . . . . . . . . . . . . . . . . . 1-13
Filter,
Engine Air Cleaner . . . . . . . . . 10-17
Flash-to-Pass . . . . . . . . . . . . . . . . . . . 6-3
Flashers, Hazard Warning . . . . . . 6-5
Flat Tire . . . . . . . . . . . . . . . . . . . . . . 10-79 Changing . . . . . . . . . . . . . . . . . . . 10-80
Floor Mats . . . . . . . . . . . . . . . . . . .10-108 Fluid
Automatic
Transmission . . . . . . . 10-11, 10-14
Brakes . . . . . . . . . . . . . . . . . . . . . . 10-30
Four-Wheel Drive Transfer Case . . . . . . . . . . . . . . . 9-45
Power Steering . . . . . . . . . . . . . 10-27
Washer . . . . . . . . . . . . . . . . . . . . . 10-28
Fog Lamps Bulb Replacement . . . . . . . . . . . . . 6-6
Folding Mirrors . . . . . . . . . . . . . . . . 2-15
Four-Wheel Drive . . . . . . . 10-32, 9-45
Four-Wheel-Drive Light . . . . . . . . 5-28
Front Axle . . . . . . . . . . . . . . . . . . . . 10-33
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 5-31
Front Seats Adjustment . . . . . . . . . . . . . . . . . . . . 3-3
Heated and Ventilated . . . . . . . . 3-10
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-76 Additives . . . . . . . . . . . . . . . . . . . . . 9-77
E85 (85% Ethanol) . . . . . . . . . . . 9-78
Filling a Portable Fuel
Container . . . . . . . . . . . . . . . . . . . 9-81 Fuel (cont'd)
Filling the Tank . . . . . . . . . . . . . . . 9-80
Fuels in Foreign Countries . . . . 9-77
Gasoline Specifications . . . . . . . 9-77
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 5-14
Low Fuel Warning Light . . . . . . . 5-30
Management, Active . . . . . . . . . . 9-36
Recommended . . . . . . . . . . . . . . . 9-76
Requirements, California . . . . . 9-77
System Messages . . . . . . . . . . . . 5-46
Fuel Economy Driving . . . . . . . . . . . . . . . . . . . . . . . . 1-34
Full-Size Spare Tire . . . . . . . . . . 10-91
Fuses Engine CompartmentFuse Block . . . . . . . . . . . . . . . . 10-47
Fuses and Circuit Breakers . . . . . . . . . . . . . . . . . . 10-47
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . . . . 10-51