GMC 2007 Canyon - Manual (Page 238)

Theft-Deterrent Feature
(RDS Radios)
THEFTLOCK ® is designed to discourage theft
of your vehicle’s radio. The feature works
automatically by learning a portion of the
Vehicle Identification Number (VIN). If the radio
is moved to a different vehicle, it will not operate
and LOCKED will appear on the display.
When the radio and vehicle are turned off, the
blinking red light indicates that THEFTLOCK
®
is armed.
With THEFTLOCK ® activated, the radio will not
operate if stolen.
Radio Reception
You may experience frequency interference and
static during normal radio reception if items
such as cellphone 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.
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 will 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 your radio.
FM Stereo
FM stereo will give the best sound, but FM signals
will reach only about 10 to 40 miles (16 to 65 km).
Tall buildings or hills can interfere with FM
signals, causing the sound to fade in and out.
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