2009 GMC SIERRA 1500 charging

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.
4-82

Bulb Replacement (cont.)
License Plate Lamps....................................5-65
Pickup Box Identication and Fender Marker
Lamps ....................................................5-63
Taillamps, Turn Signal, Stoplamps and
Back-up Lamps........................................5-63
Buying New Tires...........................................5-86
C
Calibration.....................................................3-63
California
Perchlorate Materials Requirements................. 5-5
California Fuel.................................................. 5-7
California Proposition 65 Warning....................... 5-5
Camera, Rear Vision.......................................2-64
Canadian Owners............................................... iii
Capacities and Specications..........................5-131
Carbon Monoxide
Engine Exhaust...........................................2-55
Tailgate......................................................2-13
Winter Driving.............................................4-30
Care of
Safety Belts..............................................5-118
Cargo
Lamp .........................................................3-21Cargo Management System.............................2-83
CD, MP3 ............................................3-106, 3-111
Center Console Storage...................................2-81
Center High-Mounted Stoplamp (CHMSL) and
Cargo Lamp...............................................5-62
Center Seat...................................................1-13
Chains, Tire...................................................5-92
Charging System Light....................................3-41
Check
Engine Lamp..............................................3-45
Checking Things Under the Hood......................5-14
Chemical Paint Spotting.................................5-122
Child Restraints
Infants and Young Children...........................1-41
Lower Anchors and Tethers for Children..........1-49
Older Children.............................................1-38
Securing a Child Restraint in a Rear Seat
Position..................................................1-58
Securing a Child Restraint in the Center
Front Seat Position...................................1-61
Securing a Child Restraint in the Right
Front Seat Position..................1-62, 1-66, 1-70
Systems.....................................................1-45
Where to Put the Restraint...........................1-48
Cigarette Lighter.............................................3-23
Circuit Breakers............................................5-124
3

Hood
Checking Things Under................................5-14
Release.....................................................5-14
Horn ............................................................... 3-8
How to Wear Safety Belts Properly...................1-22
I
Ignition Positions.............................................2-22
Infants and Young Children, Restraints...............1-41
Ination - Tire Pressure...................................5-76
Instrument Panel
Brightness..................................................3-20
Cluster.......................................................3-34
Overview...............................................3-4, 3-6
Storage Area..............................................2-81
Introduction...................................................... 6-2
J
Jump Starting.................................................5-46
K
Keyless Entry, Remote Operation........................ 2-5
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Labeling, Tire Sidewall.....................................5-68
Lamp
Malfunction Indicator....................................3-45
Lamps
Auxiliary Roof Mounted Lamp........................3-19
Cargo........................................................3-21
Daytime Running (DRL)................................3-17
Dome ........................................................3-20
Dome Lamp Override...................................3-20
License Plate..............................................5-65
Puddle.......................................................3-19
Reading.....................................................3-21
Lap Belt........................................................1-36
Lap-Shoulder Belt...........................................1-30
LATCH System for Child Restraints...................1-49
Latches, Seatback..........................................1-13
Lighting
Entry.........................................................3-20
Exit...........................................................3-20
Lights
Airbag Off..................................................3-38
Airbag Readiness........................................3-37
Antilock Brake System (ABS) Warning............3-43
Brake System Warning.................................3-42
Charging System.........................................3-41
Cruise Control.............................................3-50
8