ad blue GMC SIERRA 1500 2009 User Guide

Heavy-DutyTrailer Wiring Harness
Package
For vehicles equipped with heavy duty trailering, the
harness is connected to a bracket on the hitch platform.
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/retailer or a qualied 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/retailer or authorized
service center install the required fuse.
If charging a remote (non-vehicle) battery, press the
tow/haul mode button 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, turn on the headlamps as a second way to boost
the vehicle system and charge the battery.
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Camper/Fifth-Wheel Trailer Wiring Package
The seven-wire camper harness is located under the
front edge of the pickup box on the drivers 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 BrakeIf 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, an eight-wire harness
with a seven-pin connector is located at the rear of the
vehicle and is tied to the vehicle’s frame.
4-83

Electric Brake Control Wiring
Provisions
These wiring provisions are included with the vehicle as
part of the trailer wiring package. These provisions are for
an electric brake controller. The instrument panel
contains blunt cut wires behind the steering column for
the trailer brake controller. The harness contains the
following wires:
Dark Blue: Brake Signal to Trailer Connector
Red/Black: Battery
Light Blue/White: Brake Switch
White: Ground
It should be installed by your dealer/retailer or a qualied
service center.
If the vehicle is equipped with an ITBC, the blunt cuts
exist, but are not connected further in the harness. If an
aftermarket trailer brake controller is installed, the ITBC
must be disconnected. Do not power both ITBC and
aftermarket controllers to control the trailer brakes at the
same time.
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 drivers side of
the vehicle, next to the underhood electrical center.Be sure to follow the proper installation instructions that
are 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 for the auxiliary battery provision.
Trailer Recommendations
Subtract the hitch loads from the Cargo Weight Rating
(CWR). CWR is the maximum weight of the load
the vehicle can carry. It does not include the weight of
the people inside, but you can gure about 150 lbs.
(68 kg) for each passenger. The total cargo load must
not be more than the vehicles CWR.
Weigh the vehicle with the trailer attached, so the
GVWR or GAWR are not exceeded. If using a
weight-distributing hitch, weigh the vehicle without the
spring bars in place.
The best performance is obtained by correctly spreading
out the weight of the load and choosing the correct
hitch and trailer brakes.
For more information seeTowing a Trailer on page 4-53.
4-84

Appearance Care (cont.)
Tires........................................................5-121
Underbody Maintenance.............................5-122
Washing Your Vehicle.................................5-118
Weatherstrips............................................5-118
Windshield and Wiper Blades......................5-120
Ashtray.........................................................3-23
Assistance Program, Roadside........................... 7-7
Audio System.................................................3-84
Audio Steering Wheel Controls....................3-140
Navigation/Radio System, see Navigation
Manual.................................................3-118
Setting the Clock.........................................3-85
XM™ Satellite Radio Antenna System...........3-142
Audio System(s).............................................3-87
Audio Systems
Radio Reception........................................3-141
Rear Seat (RSA).......................................3-138
Theft-Deterrent Feature...............................3-140
Automatic Headlamp System............................3-18
Automatic Transmission
Fluid..................................................5-24, 5-27
Operation...................................................2-28
Auxiliary
Roof Mounted Lamp....................................3-19
Axle, Rear.....................................................5-51B
Battery..........................................................5-45
Electric Power Management..........................3-21
Run-Down Protection...................................3-22
Belt Routing, Engine.......................................6-18
Bluetooth
®....................................................3-118
Brake
Emergencies................................................ 4-6
Pedal and Adjustable Throttle........................2-26
Brake Fluid....................................................5-41
Brakes..........................................................5-41
Antilock....................................................... 4-5
Parking......................................................2-50
System Warning Light..................................3-42
Braking........................................................... 4-4
Braking in Emergencies..................................... 4-6
Break-In, New Vehicle.....................................2-22
Bulb Replacement...........................................5-66
Center High-Mounted Stoplamp (CHMSL)
and Cargo Lamp......................................5-62
Fog Lamp ..................................................3-19
Halogen Bulbs............................................5-61
Headlamp Aiming........................................5-58
Headlamps.................................................5-61
2

Overheated Engine Protection Operating Mode.....5-38
Owner Checks and Services.............................6-11
Owners, Canadian.............................................. iii
P
Paint, Damage..............................................5-121
Park
Shifting Into................................................2-52
Shifting Out of............................................2-54
Park Aid........................................................2-61
Park Tilt Mirrors..............................................2-60
Parking
Assist........................................................2-61
Over Things That Burn.................................2-54
Parking Brake................................................2-50
Passenger Airbag Status Indicator.....................3-40
Passenger Sensing System..............................1-84
Passing.........................................................4-11
PASS-Key
®III+ Electronic Immobilizer...............2-20
PASS-Key®III+ Electronic Immobilizer
Operation...................................................2-20
Perchlorate Materials Requirements, California...... 5-5Phone
Bluetooth
®................................................3-118
Pickup Conversion to Chassis Cab....................4-47
Power
Door Locks.................................................2-10
Electrical System.......................................5-123
Lumbar Controls........................................... 1-7
Retained Accessory (RAP)............................2-23
Seat............................................................ 1-5
Sliding Rear Window....................................2-17
Steering Fluid.............................................5-39
Windows....................................................2-16
Pregnancy, Using Safety Belts..........................1-36
Privacy..........................................................7-17
Navigation System.......................................7-19
OnStar.......................................................7-19
Radio Frequency Identication (RFID).............7-19
Program
Courtesy Transportation................................7-10
Programmable Automatic Door Locks.................2-11
Proposition 65 Warning, California....................... 5-5
Puddle Lamps................................................3-19
11