GMC 2007 Acadia Owner's Manual page 290

(Power): Press this knob to turn the radio on
O
or off. Turn this knob clockwise or counterclockwise
to increase or decrease the volume. Press and hold
the knob for more than two seconds to turn off the
entire radio and Rear Seat Entertainment (RSE)
system and to start the parental control feature.
Parental control prevents the rear seat occupant
from operating the Rear Seat Audio (RSA) system
or remote control.
A lock symbol appears next to the clock display.
The parental control feature remains on until
you press and hold this button for more than
two seconds again, or until the driver turns the
ignition off and exits the vehicle.
f
(Tune): Turn this knob to change tracks on
a CD or DVD, to manually tune a radio station,
or to change clock or date settings, while in
the clock or date setting mode. See the information
given earlier in this section specific to the radio,
CD, and the DVD. Also, see Setting the Time
on page 266, for setting the clock and date.
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SEEK (Previous Track/Chapter): Press this
button to return to the start of the current track
or chapter. Press this button again to go to
the previous track or chapter. This button might
not work when the DVD is playing the copyright
information or the previews.
¨
SEEK (Next Track/Chapter): Press this button
to go to the next track or chapter. This button
might not work when the DVD is playing the
copyright information or the previews.
REV (Reverse): Press this button to quickly
s
reverse the CD or DVD, at five times the normal
speed. The radio displays the elapsed time while in
fast reverse. To stop fast reversing, press this
button again. This button might not work when the
DVD is playing the copyright information or the
previews.
FWD (Fast Forward): Press this button to
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fast forward the CD or DVD. The radio displays the
elapsed time and fast forwards five times the
normal speed. To stop fast forwarding, press this
button again. This button might not work when
the DVD is playing the copyright information or the
previews.