GMC 2012 Sierra Series Owner's Manual page 391

When trailering, make sure of the
following:
The ITBC system is used only
with trailers that are equipped
with electric brakes.
All applicable local and federal
laws and regulations are
followed.
All electrical and mechanical
connections to the trailer are
made correctly.
The trailer s brakes are in proper
working condition.
The trailer and vehicle are
properly loaded for the towing
condition.
The ITBC system is a
factory-installed item. Out of factory
installation of this system should not
be attempted. GM is not responsible
for warranty or performance of the
system resulting from out of factory
installation.
Trailer Brake Control Panel
A. Manual Trailer Brake Apply
Lever
B. Trailer Gain Adjustment Buttons
The ITBC system has a control
panel located on the instrument
panel to the left of the steering
column. See Instrument Panel
(Base/Uplevel Version) on page 1 2
or Instrument Panel (Premium
Version) on page 1 6 for more
I n f o r ma t i o n P r o v i d e d b y :
Driving and Operating
information. The control panel
allows adjustment to the amount of
output, referred to as trailer gain,
available to the electric trailer
brakes and allows manual
application of the trailer brakes. The
Trailer Brake Control Panel is used
along with the Trailer Brake Display
Page on the DIC to adjust and
display power output to the trailer
brakes.
Trailer Brake DIC Display Page
The ITBC system displays
messages on the vehicle s Driver
Information Center (DIC). See
Driver Information Center (DIC) on
page 5 33 for more information.
The display page indicates Trailer
Gain setting, power output to the
electric trailer brakes, trailer
connection, and system operational
status.
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