Theft-Deterrent Feature (Non-Rds Radios); Theft-Deterrent Feature (Rds Radios); Understanding Radio Reception - GMC Jimmy 2004 Owner's Manual

Theft-Deterrent Feature
(Non-RDS Radios)
®
THEFTLOCK is designed to discourage theft of your
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 LOC will appear on the display.
®
With THEFTLOCK activated, your radio will not operate
if stolen.
Theft-Deterrent Feature
(RDS Radios)
®
THEFTLOCK is designed to discourage theft of your
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
®
With THEFTLOCK activated, your radio will not operate
if stolen.
3-74
®
is armed.

Understanding Radio Reception

AM
The range for most AM stations is greater than for FM,
especially at night. The longer range, however, can
cause stations to interfere with each other. AM can pick
up noise from things like storms and power lines.
Try reducing the treble to reduce this noise.
FM
FM stereo will give you 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 come and go.