Page 305 of 484

The seven-wire harness contains the following trailer
circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Running Lamps
White: Ground
Light Green: Back-up Lamps
Dark Blue: Electric Brakes
Red: Battery Feed (The chassis wiring ring terminal
must be fastened to a stud on the underhood
electrical center before the trailer feed will become
active.)
If towing a light-duty trailer with a standard four-way
round pin connector, an adapter connector is available
from your dealer/retailer.
If charging a remote (non-vehicle) battery, turn on the
headlamps to boost the vehicle system voltage and
properly charge the battery.
The vehicle is also equipped with wiring for an electric
trailer brake controller. These wires are located inside the
vehicle on the driver side under the instrument panel.
These wires should be connected to an electric trailer
brake controller by your dealer/retailer or a quali ed
service center.The vehicle may be equipped with a four-pin trailer
towing harness. This harness has a four-pin trailer
connector that contains the following trailer circuits:
Yellow: Left Stop/Turn Signal
Dark Green: Right Stop/Turn Signal
Brown: Running Lamps
White: Ground
This harness also contains the following trailer circuits
that are not connected to the four-pin trailer connector:
Light Green: Back-Up Lamps
Dark Blue: Electric Brakes
Red: Battery Feed
If the vehicle is a TrailBlazer SS, a trailer wiring harness
extension, and instructions for installing this extension,
were provided when the vehicle was delivered. This
extension will allow the vehicle’s trailer wiring harness to
be more easily accessible. There is a four-way connector
on the harness. A seven-way adapter plug is also
included if the trailer requires it.
4-59
Page 473 of 484

Charging System Light....................................3-34
Check
Engine Lamp..............................................3-39
Gages Warning Light...................................3-45
Check Gas Cap Light......................................3-47
Checking Things Under the Hood......................5-10
Chemical Paint Spotting.................................5-116
Child Restraints
Child Restraint Systems...............................1-39
Infants and Young Children...........................1-35
Lower Anchors and Tethers for Children..........1-43
Older Children.............................................1-32
Securing a Child Restraint in a
Rear Outside Seat Position........................1-49
Securing a Child Restraint in the
Center Rear Seat Position.........................1-51
Securing a Child Restraint in the
Right Front Seat Position..........................1-52
Where to Put the Restraint...........................1-42
Chime Level Adjustment.................................3-111
Cigarette Lighter.............................................3-19
Cleaning
Aluminum Wheels......................................5-115
Exterior Lamps/Lenses................................5-113
Fabric/Carpet............................................5-111
Finish Care...............................................5-114
Instrument Panel, Vinyl, and Other
Plastic Surfaces.....................................5-112
Interior.....................................................5-109Cleaning (cont.)
Leather....................................................5-111
Tires........................................................5-115
Underbody Maintenance.............................5-116
Washing Your Vehicle.................................5-113
Weatherstrips............................................5-112
Windshield, Backglass, and Wiper Blades......5-114
Climate Control System
Dual ..........................................................3-20
Dual Automatic............................................3-22
Outlet Adjustment........................................3-26
Rear ..........................................................3-27
Clock, Setting.................................................3-63
Collision Damage Repair..................................7-12
Compass.......................................................2-42
Competitive Driving.........................................4-14
Compressor Kit
Storing.......................................................5-92
Compressor Kit, Tire Sealant............................5-83
Content Theft-Deterrent....................................2-17
Control of a Vehicle.......................................... 4-3
Convenience Net............................................2-56
Coolant
Engine.......................................................5-29
Engine Temperature Gage............................3-38
Cooling System..............................................5-28
Cruise Control................................................3-10
Cruise Control Light........................................3-44
3
Page 477 of 484

Hood
Checking Things Under................................5-10
Release.....................................................5-11
Horn ............................................................... 3-6
How to Wear Safety Belts Properly...................1-18
I
Ignition Positions.............................................2-22
Infants and Young Children, Restraints...............1-35
In ation - Tire Pressure...................................5-65
In ator Kit, Tire...............................................5-83
Instrument Panel
Brightness..................................................3-16
Cluster.......................................................3-29
Overview..................................................... 3-4
J
Jump Starting.................................................5-43
K
Keyless Entry System....................................... 2-4
Keys............................................................... 2-3
L
Labeling, Tire Sidewall.....................................5-60
Lamp
Malfunction Indicator....................................3-39
Lamps
Dome ........................................................3-17
Dome Lamp Override...................................3-17
Reading.....................................................3-17
Lap-Shoulder Belt...........................................1-27
LATCH System for Child Restraints...................1-43
License Plate Lamps.......................................5-54
Liftgate/Liftglass..............................................2-13
Liftglass/Liftgate..............................................2-13
Light
Airbag Readiness........................................3-32
Antilock Brake System (ABS) Warning............3-37
Brake System Warning.................................3-36
Change Engine Oil......................................3-43
Charging System.........................................3-34
Check Gages Warning.................................3-45
Check Gas Cap..........................................3-47
Cruise Control.............................................3-44
Gate Ajar...................................................3-46
Highbeam On.............................................3-45
Low Fuel Warning.......................................3-47
7