Chevrolet 2010 Colorado, Owner'S Manual

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Theft-Deterrent Feature
Non-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 does
not operate and LOC displays.
With THEFTLOCK
®
activated, the radio does not
operate if stolen.
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 does
not operate and LOCKED displays.
When the radio and vehicle are turned off, the blinking
red light indicates that THEFTLOCK
®
is armed.
With THEFTLOCK
®
activated, the radio does not
operate if stolen.
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.
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.
FM Stereo
FM signals only reach about 10 to 40 miles (16 to 65 km).
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.
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