GMC 2011 Acadia - Manual (Page 213)

Black plate (13,1) GMC Acadia/Acadia Denali Owner Manual - 2011
Infotainment System 7-13
AM
The range for most AM stations is
greater than for FM, especially at
night. The longer range can cause
station frequencies to interfere
with each other. For better radio
reception, most AM radio stations
boost the power levels during the
day, and then reduce these levels
during the night. Static can also
occur when things like storms and
power lines interfere with radio
reception. When this happens, try
reducing the treble on the radio.
XM™ Satellite Radio Service
XM Satellite Radio Service
gives digital radio reception from
coast to coast in the 48 contiguous
United States, and in Canada.
Just as with FM, tall buildings or
hills can interfere with satellite radio
signals, causing the sound to fade
in and out. In addition, traveling
or standing under heavy foliage,
bridges, garages, or tunnels may
cause loss of the XM signal for a
period of time.
Cellular Phone Usage
Cellular phone usage may cause
interference with the vehicle's
radio. This interference may occur
when making or receiving phone
calls, charging the phone's battery,
or simply having the phone on.
This interference can cause an
increased level of static while
listening to the radio. If static is
received while listening to the
radio, unplug the cellular phone
and turn it off.
Multi-Band Antenna
The multi-band antenna is located
on the roof of the vehicle. This type
of antenna is used with the AM/FM
radio, as well as OnStar
® and the
XM™ Satellite Radio Service
System, if the vehicle has these
features. Keep this antenna clear
of snow and ice build up for clear
radio reception. If the vehicle has
a sunroof, the performance of the
radio system may be affected if the
sunroof is open. Loading items onto
the roof of the vehicle can interfere
with the performance of the radio
system and, if the vehicle has this
feature, OnStar
® . Make sure the
multi-band antenna is not
obstructed.