Radio Reception; Multi-Band Antenna - GMC 2011 Terrain Owner's Manual

7-18 Infotainment System
XM Not Available: If this message
does not clear within a short period
of time, the receiver could have a
fault. Consult with your dealer.

Radio Reception

Frequency interference and static
can occur during normal radio
reception if items such as cell phone
chargers, vehicle convenience
accessories, and external electronic
devices are plugged into the
accessory power outlet. If there is
interference or static, unplug the
item from the accessory power
outlet.
FM
FM signals only reach about 16 to
65 km (10 to 40 mi). Although the
radio has a built-in electronic circuit
that automatically works to reduce
interference, some static can occur,
especially around tall buildings or
hills, causing the sound to fade in
and out.
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. Static can 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 can cause
interference with the vehicle's radio.

Multi-Band Antenna

The multi-band antenna is on the
roof of the vehicle. The antenna is
used for the AM FM radio, OnStar,
the XM Satellite Radio Service
System, and GPS (Global
Positioning System), if the vehicle
has these features. Keep the
antenna clear of obstructions for
clear reception.