GMC sierra 2002 User Manual

Your pickup may be equipped with the eight

-

wire trailer

towing harness. This harness with a seven

-

pin universal

heavy

-

duty trailer connector is attached to a bracket on

the platform hitch.*

* The Center High

-

Mounted Stoplamp (CHMSL) wire

is tied next to the trailer wiring harness for use with a
trailer, slide

-

in camper or cap.

The eight

-

wire harness contains the following 

trailer circuits:
D Yellow: Left Stop/Turn Signal
D Dark Green: Right Stop/Turn Signal
D Brown: Taillamps
D White: Ground
D Light Green: Back

-

up Lamps

D Light Blue: CHMSL
D Red: Battery Feed
D Dark Blue: Trailer Brake
A jumper harness for an electric trailer brake controller
and a trailer battery feed fuse are included with this
trailering package. (See “Instrument Panel Jumper
Wiring Harness” later in this section.)

If you need to tow a light

-

duty trailer with a standard

four

-

way round pin connector, an adapter connector is

included with your vehicle.