auxiliary battery GMC SIERRA 1500 2012 Owners Manual

Black plate (1,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Lighting 6-1
Lighting
Exterior Lighting
Exterior Lamp Controls . . . . . . . . 6-1
Exterior Lamps OffReminder . . . . . . . . . . . . . . . . . . . . 6-2
Headlamp High/Low-Beam Changer . . . . . . . . . . . . . . . . . . . . . 6-3
Flash-to-Pass . . . . . . . . . . . . . . . . . 6-3
Daytime Running Lamps (DRL) . . . . . . . . . . . . . . . . 6-3
Automatic Headlamp System . . . . . . . . . . . . . . . . . . . . . . 6-4
Hazard Warning Flashers . . . . . 6-5
Turn and Lane-Change Signals . . . . . . . . . . . . . . . . . . . . . . 6-5
Fog Lamps . . . . . . . . . . . . . . . . . . . . 6-6
Auxiliary Roof-Mounted Lamp . . . . . . . . . 6-6
Interior Lighting
Instrument Panel IlluminationControl . . . . . . . . . . . . . . . . . . . . . . 6-7
Cargo Lamp . . . . . . . . . . . . . . . . . . 6-8
Dome Lamps . . . . . . . . . . . . . . . . . 6-8
Reading Lamps . . . . . . . . . . . . . . . 6-8
Lighting Features
Entry Lighting . . . . . . . . . . . . . . . . . 6-9
Exit Lighting . . . . . . . . . . . . . . . . . . . 6-9
Battery Load Management . . . . 6-9
Battery Power Protection . . . . 6-10
Exterior Lighting
Exterior Lamp Controls
The exterior lamps control is located
on the instrument panel to the left of
the steering wheel.
It controls the following systems:
.Headlamps
.Taillamps
.Parking Lamps
.License Plate Lamps
.Instrument Panel Lights
.Roof Marker Lamps
(If Equipped)

Black plate (32,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
7-32 Infotainment System
Player Error:This message
displays if there are disc load or
disc eject problems.
.It is very hot. When the
temperature returns to normal,
the disc should play.
.The road is very rough. When
the road becomes smoother, the
disc should play.
.The disc is dirty, scratched, wet,
or upside down.
.The air is very humid. If so, wait
about an hour and try again.
.There was a problem while
burning the disc.
.The label is caught in the CD/
DVD player.
If the disc is not playing correctly, for
any other reason, try a known
good disc.
If any error occurs repeatedly or if
an error cannot be corrected,
contact your dealer. If the radio displays an error message, write it
down and provide it to your dealer
when reporting the problem.
Auxiliary Devices
Using the Auxiliary Input Jack
Radios with an auxiliary input jack
located on the lower right side of the
faceplate can connect to an external
audio device such as an iPod
®,
MP3 player, or CD player, for use as
another source for audio listening.
This input jack is not an audio
output; do not plug headphones into
the front auxiliary input jack.
Drivers are encouraged to set up
any auxiliary device while the
vehicle is in P (Park). See
Defensive Driving on page 9‑3 for
more information on driver
distraction.
To use a portable audio player,
connect a 3.5 mm (1/8 in) cable to
the radio's front auxiliary input jack.
When a device is connected, press the radio CD/AUX button to begin
playing audio from the device over
the vehicle speakers.
For optimal sound quality, increase
the portable audio device's volume
to the loudest level.
It is always best to power the
portable audio device through its
own battery while playing.O(Power/Volume):
Turn clockwise
or counterclockwise to increase
or decrease the volume of the
portable player. Additional volume
adjustments might have to be made
from the portable device if the
volume is not loud or soft enough.
BAND: Press to listen to the radio
when a portable audio device is
playing. The portable audio device
continues playing.
CD/AUX (CD/Auxiliary): Press to
play a CD when a portable audio
device is playing. Press again and
the system begins playing audio
from the connected portable audio

Black plate (34,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
7-34 Infotainment System
.Folder and file names up to
64 bytes
.Files with an .mp3 or .wma file
extension
.AAC files stored on an iPod
.FAT16
.FAT32
Connecting a USB Storage
Device or iPod®
The USB port can be used to
control an iPod or a USB storage
device.
To connect a USB storage device,
connect the device to the USB port
located in the center console or on
the instrument panel.
To connect an iPod, connect one
end of the USB cable that came
with the iPod to the iPod’s dock
connector and connect the other
end to the USB port located in the
center console or on the instrument
panel. If the vehicle is on and the
USB connection works,“OK to
disconnect” and a GM logo may appear on the iPod, and iPod
appears on the radio display. The
iPod music appears on the radio’s
display and begins playing.
The iPod charges while it is
connected to the vehicle if the
vehicle is in the ACC/ACCESSORY
or ON/RUN position. When the
vehicle is turned off, the iPod
automatically powers off and will
not charge or draw power from the
vehicle's battery.
If you have an older iPod model that
is not supported, it can still be used
by connecting it to the auxiliary
input jack using a standard 3.5 mm
(1/8 in) stereo cable. See
“Using the
Auxiliary Input Jack” earlier for more
information.
Using the Radio to Control a
USB Storage Device or iPod
The radio can control a USB
storage device or an iPod using
the radio buttons and knobs, and
display song information on the
radio’s display.
f(Tune): Turn to select files.
©SEEK:Press to go to the start of
the track, if more than 10 seconds
have played. Press and hold or
press multiple times to continue
moving backward through tracks.
¨SEEK: Press to go to the next
track. Press and hold or press
multiple times to continue moving
forward through tracks.
sREV (Reverse): Press and hold
to reverse playback quickly. Sound
is heard at a reduced volume.
Release
sREV to resume playing.
The elapsed time of the file
displays.
\FWD (Fast Forward): Press
and hold to advance playback
quickly. Sound is heard at a reduced
volume. Release
\FWD to
resume playing. The elapsed time of
the file displays.
4(Information): Press to display
additional information about the
selected track.

Black plate (38,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
7-38 Infotainment System
Headphones
A. Battery cover
B. Channel 1 or 2 switch
C. Power button
D. Volume control
E. Power indicator light
The RSE includes two 2-channel
wireless headphones that are
dedicated to this system. Channel 1
is dedicated to the video screen,
while Channel 2 is dedicated to
Rear Seat Audio (RSA) selections.
These headphones can be used tolisten to the radio, CDs, DVDs,
MP3s, DVD-As, or any auxiliary
source connected to A/V jacks or
the auxiliary input jack, if the vehicle
has this feature. The wireless
headphones have a power button,
channel 1 or 2 switch, and a volume
control.
Push the power button to turn on
the headphones. An indicator light
located on the headphones comes
on. If the light comes on, but there
is intermittent sound and/or static on
the headphones, or if the indicator
light does not come on, the batteries
might need to be replaced. See
“Battery Replacement”
later in this
section for more information. Switch
the headphones to Off when not
in use.
Infrared transmitters are located
at the rear of the overhead
console. The headphones shut off
automatically to save the battery
power if the RSE system and RSA
are shut off, or if the headphones
are out of range of the transmitters
for more than three minutes. If you move too far forward or step out of
the vehicle, the headphones lose
the audio signal.
To adjust the volume on the
headphones, use the volume control
located on the right side.
For optimal audio performance, the
headphones must be worn correctly.
Headphones should be worn with
the headband over the top of the
head for best audio reception. The
symbol L (Left) appears on the
outside bottom edge of the ear cup
and should be positioned on the left
ear. The symbol R (Right) appears
on the outside bottom edge of the
ear cup and should be positioned on
the right ear.
Notice:
Do not store the
headphones in heat or direct
sunlight. This could damage the
headphones and repairs will not
be covered by the warranty.
Storage in extreme cold can
weaken the batteries. Keep the
headphones stored in a cool, dry
place.

Black plate (39,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Infotainment System 7-39
If the foam ear pads attached to
the headphones become worn or
damaged, the pads can be replaced
separately from the headphone set.
To purchase replacement ear pads,
call 1-888-293-3332, then prompt
zero (0), or contact your dealer.
Battery Replacement
To change the batteries on the
headphones:
1. Turn the screw to loosen thebattery door located on the left
side of the headphones. Slide
the battery door open.
2. Replace the two batteries in the compartment. Make sure that
they are installed correctly, using
the diagram on the inside of the
battery compartment.
3. Replace the battery door and tighten the door screw.
If the headphones are to be stored
for a long period of time, remove the
batteries and keep them in a cool,
dry place.Audio/Video (A/V) Jacks
Yellow: Video Input
White: Left Audio Input
Red: Right Audio Input
The A/V jacks are color coded to
match typical home entertainment
system equipment.
The A/V jacks, located on the rear
of the floor console, allow audio or
video signals to be connected from
an auxiliary device such as a
camcorder or a video game unit to the RSE system. Adapter
connectors or cables (not included)
may be required to connect the
auxiliary device to the A/V jacks.
Refer to the manufacturer
’s
instructions for proper usage.
Power for auxiliary devices is not
supplied by the radio system.
To use the auxiliary inputs of the
RSE system, connect an external
auxiliary device to the color-coded
A/V jacks and turn both the auxiliary
device and the video screen power
on. If the video screen is in the DVD
player mode, pressing the AUX
(auxiliary) button on the remote
control switches the video screen
from the DVD player mode to the
auxiliary device. The audio of the
connected source can be listened to
over the speakers by sourcing the
radio to the auxiliary device or by
sourcing the RSA to the Rear Aux
and listening with the wireless
headphones on Channel 2 or
with the wired headphones.

Black plate (43,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Infotainment System 7-43
r(Fast Reverse):Press this
button to quickly reverse the DVD or
CD. To stop fast reversing a DVD
video, press the play/pause button.
To stop fast reversing a DVD audio
or CD, release the fast reverse
button. This button might not work
when the DVD is playing the
copyright information or the
previews.
[(Fast Forward): Press this
button to fast forward the DVD or
CD. To stop fast forwarding a DVD
video, press the play/pause button.
To stop fast forwarding a DVD audio
or CD, release the fast forward
button. This button might not work
while the DVD is playing the
copyright information or the
previews.
e(Audio): Press this button to
change audio tracks on DVDs that
have this feature when the DVD is
playing. The format and content of
this function vary for each disc.
{(Subtitles): Press this button to
turn on or off subtitles and to move
through subtitle options when a
DVD is playing. The format and
content of this function vary for
each disc.
AUX (Auxiliary): Press this button
to switch the system between the
DVD player and an auxiliary source.
2(Camera): Press this button to
change camera angles on DVDs
that have this feature while a DVD is
playing. The format and content of
this function vary for each disc.
1 through 0 (Numeric Keypad):
The numeric keypad provides the
capability of direct chapter or track
number selection.
\(Clear): Press this button within
three seconds after entering a
numeric selection, to clear all
numerical inputs.
}10 (Double Digit Entries): Press
this button to select chapter or track
numbers greater than nine. Press
this button before entering the
number.
Battery Replacement
To change the remote control
batteries, do the following:
1. Slide the rear cover back on the remote control.
2. Replace the two batteries in the compartment. Make sure they
are installed correctly using the
diagram on the inside of the
remote control.
3. Replace the battery cover.
If the remote control is to be stored
for a long period of time, remove the
batteries and keep them in a cool,
dry place.

Black plate (95,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-95
Fifth-Wheel and Gooseneck
Trailering
Fifth-wheel and gooseneck trailers
can be used with many pickup
models. These trailers place a
larger percentage of the weight
(kingpin weight) on the tow vehicle
than conventional trailers. Make
sure this weight does not cause the
vehicle to exceed GAWR or GVWR.
Fifth-wheel or gooseneck kingpin
weight should be 15 to 25 percent of
the trailer weight up to the maximum
amount specified in the trailering
chart for the vehicle. See“Weight of
the Trailer” underTrailer Towing on
page 9‑78 for more information.
The hitch should be located in the
pickup bed so that its centerline is
over or slightly in front of the rear
axle. Take care that it is not so far
forward that it will contact the back
of the cab in sharp turns. This is
especially important for short box
pickups. Trailer pin box extensions
and sliding fifth-wheel hitch
assemblies can help this condition. There should be at least six inches
of clearance between the top of the
pickup box and the bottom of the
trailer shelf that extends over
the box.
Make sure the hitch is attached to
the tow vehicle frame rails. Do not
use the pickup box for support.
Safety Chains
Always attach chains between the
vehicle and the trailer. Cross the
safety chains under the tongue
of the trailer to help prevent the
tongue from contacting the road if it
becomes separated from the hitch.
Instructions about safety chains
may be provided by the hitch
manufacturer or by the trailer
manufacturer. If the trailer being
towed weighs up to 2 271 kg
(5,000 lbs) with a factory-installed
step bumper, safety chains may be
attached to the attaching points on
the bumper; otherwise, safety
chains should be attached to holes
on the trailer hitch platform. Always
leave just enough slack so the
combination can turn. Never allow
safety chains to drag on the ground.
Trailer Brakes
A loaded trailer that weighs more
than 900 kg (2,000 lbs) needs to
have its own brake system that is
adequate for the weight of the
trailer. Be sure to read and follow
the instructions for the trailer brakes
so they are installed, adjusted, and
maintained properly.
Do not tap into the vehicle's
hydraulic brake system.
Auxiliary Battery
The auxiliary battery provision can
be used to supply electrical power
to additional equipment that may be
added, such as a slide-in camper.
If the vehicle has this provision, this
relay will be located on the driver
side of the vehicle, next to the
underhood electrical center.

Black plate (96,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
9-96 Driving and Operating
Be sure to follow the proper
installation instructions included
with any electrical equipment that is
installed.
Notice:Leaving electrical
equipment on for extended
periods will drain the battery.
Always turn off electrical
equipment when not in use and
do not use equipment that
exceeds the maximum amperage
rating of 40 amperes for the
auxiliary battery provision.
Trailer Wiring Harness
The vehicle is equipped with one of
the following wiring harnesses for
towing a trailer or hauling a slide-in
camper. Basic Trailer Wiring
All regular, extended cab and crew
cab pickups have a seven-wire
trailer towing harness.
For vehicles not equipped with
heavy duty trailering, the harness
is secured to the vehicle's frame
behind the spare tire mount. The
harness requires the installation of a
trailer connector, which is available
through your dealer.
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
PackageFor 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

Black plate (97,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
Driving and Operating 9-97
.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.
Camper/Fifth-Wheel Trailer Wiring
Package
The seven-wire camper harness is
located under the front edge of the
pickup box on the driver side of
the vehicle, attached to the frame
bracket. A connector must be
added to the wiring harness which
connects to the camper.
The harness contains the following
camper/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
If the vehicle is equipped with the
“Heavy-Duty Trailering”
option,
please refer to “Heavy-Duty Trailer
Wiring Package” earlier in this
section.
When the camper-wiring harness
is ordered without the heavy-duty
trailering package, a seven-wire
harness with a seven-pin connector
is located at the rear of the vehicle
and is tied to the vehicle's frame.

Black plate (46,1)GMC Sierra Owner Manual - 2012 - CRC - 11/15/11
10-46 Vehicle Care
FusesUsage
9 Antilock Brakes System 2
10 Trailer Back-up Lamps
11 Driver Side Low-Beam
Headlamp
12 Engine Control Module
(Battery)
13 Fuel Injectors, Ignition
Coils (Right Side)
14 Transmission Control
Module (Battery)
15 Vehicle Back-up Lamps
16 Passenger Side
Low-Beam Headlamp
17 Air Conditioning
Compressor
18 Oxygen Sensors
19 Transmission Controls
(Ignition)
20 Fuel Pump
21 Fuel System Control
Module Fuses
Usage
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
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 Fuses
Usage
36 Windshield Wiper
37 SEO B2 Upfitter Usage
(Battery)
38 Electric Adjustable Pedals
39 Climate Controls (Battery)
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