GMC Yukon XL 2015 Owner's Manual page 270

The vehicle may have an instrument
cluster parking assist display with
bars that show distance to object
and object location information for
RPA, and on some vehicles, for the
FPA system. As the object gets
closer, more bars light up.
When an object is first detected in
the rear, one beep will be heard
from the rear, or both sides of the
Safety Alert Seat will pulse two
times. When an object is very close
(<0.6 m (2 ft) in the vehicle rear,
or <0.3 m (1 ft) in the vehicle front),
a continuous beep will sound from
the front or rear, or both sides of the
Safety Alert Seat will pulse five
times. Beeps for FPA are higher
pitched than for RPA.
Turning the Features On or Off
The button to the left of the
steering wheel is used to turn on or
off the Front and Rear Parking
Assist. The indicator light in the
button comes on when the features
are on and turns off when the
features have been disabled.
Front and Rear Parking Assist can
be turned off, on, or on with towbar
through vehicle personalization. See
Parking Assist under Vehicle
Personalization on page 5-43. If the
parking assist is turned off through
vehicle personalization, the park
assist button will be disabled. To
turn the parking assist on again,
Driving and Operating
select On in the vehicle
personalization menu. The On with
Towbar setting allows for the
parking assist to work properly with
a small item attached to the trailer
hitch. Turn off parking assist when
towing a trailer.
To turn the rear parking assist
symbols, RCTA, or guidance lines
on or off:
1. On the infotainment system
Home screen, press the Settings
screen button, or turn the MENU
knob to highlight Settings and
press MENU.
2. Select Rear Camera.
3. Press Rear Park Assist
Symbols, Rear Cross Traffic
Alert, or Guidance Lines and
then select Off or On.
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