17F Optional equipment
AUTOMATIC TRANSMISSION
RANGE SELECTION MODE
Range Selection Mode allows the driver to select the range of gears desired for the current driv-ing 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. I\
f 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.
See Driving and Operating in your Owner’s Manual.
INTEGRATED TRAILER BRAKE CONTROL (ITBC)F
The ITBC system can be used to adjust the amount of power output, or Trailer Gain, avail-able 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 m\
ove) to manually apply the trailer brakes.
See Driving and Operating in your Owner’s Manual.
The traction control system limits wheelspin and the StabiliTrak® stability control system assists with directional control of the vehicle in difficult driving conditions. Both systems turn on automatically every time the vehicle is started.
Turn off traction control if the vehicle is stuck and rocking the vehicl\
e is required.
Press the Traction Control/StabiliTrak Off button on the center of the instrument panel to turn traction control off or back on. The Traction Control Off light will
illuminate on the instrument cluster when the system is off.
See Driving and Operating in your Owner’s Manual.
TRACTION CONTROL AND STABILITRAK SYSTEMS
AB
19
HILL DESCENT CONTROLF (Z71)
Hill Descent Control sets and maintains vehicle speed from 1–19 mph w\
hile descending a steep incline in a forward or reverse gear.
1. Press the Hill Descent Control button on the center of the instrument panel. Vehicle speed must be below 31 mph to enable the system. The Hill Descen\
t Control symbol will illuminate on the instrument cluster.
2. Increase or decrease speed by applying the accelerator or brake pedal or\
use the Cruise Control +/– buttons on the steering wheel. The adjusted speed \
becomes the new set speed. The symbol flashes when the system is actively applying the brakes to maintain vehicle speed.
See Driving and Operating in your Owner’s Manual.
TIRE PRESSURE MONITOR (SINGLE REAR WHEEL MODELS ONLY)
The Low Tire Pressure warning light on the instrument cluster illuminates wh\
en one or more of the tires is significantly underinflated. Fill the tires \
to the proper tire pres-sures listed on the Tire and Loading Information label, located below th\
e driver’s door latch. Current tire pressures can be viewed on the Driver Information Center.
The Tire Fill Alert provides visual and audible alerts to help when inflating a tire to th\
e recommended tire pressure. When the recommended pressure is reached, the\
horn sounds and the turn signals change from flashing to solid.
Refer to your Owner’s Manual for information about normal monthly tire maintenance.
See Vehicle Care in your Owner’s Manual.
F Optional equipment
DIESEL EXHAUST BRAKE (DIESEL MODELS ONLY)
The engine exhaust brake enhances the vehicle brake system by using engine braking and automatically downshifting the transmission, depending on the length of time the brakes are applied, to help slow the vehicle on downhill grades.
Press the Diesel Exhaust Brake button on the center of the instrument panel to turn the system on or off.See your Duramax Diesel Owner’s Manual.