GMC 2013 Acadia/Acadia Denali Owner's Manual page 142

5-28 Instruments and Controls
The HUD information appears as an
image focused out toward the front
of the vehicle.
When the ignition key is turned to
ON/RUN, the HUD will display an
introductory message for a short
time, until the HUD is ready.
The following indicator lights come
on the instrument panel when
activated and also appear on
the HUD:
Turn Signal Indicators
High-Beam Indicator Symbol
The HUD temporarily displays some
messages that are on the DIC trip
computer.
The HUD also displays the following
messages on vehicles with these
systems, when they are active:
TRACTION CONTROL ACTIVE
STABILITRAK ACTIVE
If you try to use the HUD
image as a parking aid, you may
misjudge the distance and
damage your vehicle. Do not use
the HUD image as a parking aid.
When the HUD is on, the
speedometer reading is continually
displayed. The current radio station
or CD track number will display for a
short period of time after the radio
or CD track status changes. This
happens whenever radio information
is changed. The speedometer size
is reduced when radio, CD
information, warnings,
or turn-by-turn navigation
information are displayed on
the HUD.
The HUD control is to the right of
the steering wheel.
To adjust the HUD image so that
items are properly displayed:
1. Adjust the driver seat to a
comfortable position.
2. Start the engine.
3. Adjust the HUD controls.
Use the following settings to adjust
the HUD:
(Off): To turn HUD off, rotate the
dimming knob fully counterclockwise
until the HUD display turns off.