1995 GMC Jimmy Owner's Manual - Page 151

4. Press the BAND knob and the time appears - indicating that the disabling sequence was successful. If the display indicates "SEC", the still secured. numbers did not match and the unit is Disabling The Theft System 1. Press presets 1 and 4 for 5 seconds with ignition on and radio off. The display will show "SEC", indicating the unit is in thesecure mode. 2. Press the SET button. The display will show "000". 3. Enter the first three digits of the code following steps 6 and 7 of the preceding paragraphs (To Lock the System). The display will show the numbers as entered. 4. Press the BAND knob. Theradio will display "OOO". 5 . Enter the second three digits of the code. The display will show the numbers as entered. 6. Press the BAND knob. If the display shows the disabling sequence was successful. The numbers matched the user-selected code or the factory back-up code, and the unit is in the UNSECURED mode. If the display shows "SEC", the disabling sequence was unsuccessful and thenumbers did not match either of the codes and the unit will remain inthe SECURED mode. Understanding Radio Reception FM stereo will give you the best sound. But FM signals will reach only about 10 to40 miles ( 16 to 65 km). And,tall buildings or hills can interfere with FM signals, causing the sound to come and go. 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 noisefrom things like storms and power lines. Try reducing the treble to reduce this noise if you ever get it. AM Stereo means the Delco@system can receive C-QUAM@stereo broadcasts. Many AM stations around the countr use C-QUAM@ to produce stereo, though some do not. (C-QUAM J is a registered trademark of Motorola, Inc.) If your Delco@system can get C-QUAM@, your "STEREO" light will come on when you're receiving it. Be awarethat hearing damage from loud noise is almost undetectable until it is too late. Your hearing can adapt to higher volumes of sound. Sound that seems normal can be loud and harmfulto your hearing. Take precautions by adjusting the volume control on your radio to a safe sound level before your hearing adapts to it. 3-17