GMC 2012 Canyon Owner's Manual page 244

A loaded trailer that weighs more
than 450 kg (1,000 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.
Since the vehicle is equipped with
®
StabiliTrak , the trailer cannot tap
into the vehicle's hydraulic brake
system.
The vehicle may be equipped
with a four pin trailer towing
harness. This harness has a
four pin trailer connector that is
attached to a bracket on the hitch
platform. The four wire harness
contains the following trailer circuits:
Yellow: Left Stop/Turn Signal
Green: Right Stop/Turn Signal
Brown: Taillamps/Park lamps
White: Ground
Add-on equipment can drain the
vehicle's 12 volt battery, even if the
vehicle is not operating.
The vehicle has an airbag system.
Before attempting to add anything
electrical to the vehicle, see
and
.
We are aware that some vehicle
owners might consider having the
pickup box removed and a
commercial or recreational body
installed. However, we recommend
that conversions of this type not be
done to pickups. Owners should be
aware that, as manufactured, there
are differences between a chassis
cab and a pickup with the box
removed which could affect
vehicle safety.