towing GMC SIERRA 2018 Get To Know Guide

18F Optional equipment
AUTOMATIC TRANSMISSION
INTEGRATED TRAILER BRAKE CONTROL (ITBC)F
Range Selection Mode
Range Selection Mode allows the driver to select the range of gears desi\
red for the current driving conditions.
1. Move the shift lever to the L (Manual) position.
2. Press the + (plus) or – (minus) button (A) on the shift lever to select a lower or higher gear. The current gear is displayed next to the L on the Driver Information Center.
The transmission will be limited to the gear selected and lower gears. If vehicle speed is too high or too low for the requested gear, the shift will not occur.
Tow/Haul Mode
The Tow/Haul Mode adjusts the transmission shifts to reduce shift cyclin\
g, such as when towing or hauling heavy loads or driving on steep grades.
Press the Tow/Haul Mode button (B) on the end of the shift lever to turn the system on or off.
GMC Trailering Guide App
The free trailering guide app includes maximum trailer weight ratings by\
model along with
trailering information on hitches and equipment, GMC trailering technolo\
gies, safe trailering techniques and more. Currently available for the iPad®, download the mobile app from the iPad’s app store.
See Driving and Operating in your Owner’s Manual.
The ITBC system can be used to adjust the amount of power output, or Trailer Gain, available to the trailer brakes. The control panel is located on the left side of the instrument panel. ITBC information is displayed on the Driver Information Center.
Adjust the Trailer Gain by pressing the +/– adjustment buttons on the control panel.
Squeeze the levers together on the control panel (left lever does not move) to manually apply the trailer brakes.
See Driving and Operating in your Owner’s Manual.
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