1998 GMC Safari Owner's Manual - Page 178

Theft-Deterrent Feature(If Equipped) THEFTLOCK@ is designed to discourage theft of your radio. It works by usinga secret code to disable radio all functions whenever battery power removed. Your is audio system is equipped with THEFTLOCK if THEFTLOCK is displayed on the front the radio. of 1. Write down any three or four-digit number from 000 to 1999 and keep itin a safe place separate from the vehicle. 2. Turn the ignition to ACCESSORY or RUN. , 3. Turn the radio off. 4. Press the 1 and 4 buttons together. Hold them down The THEFTLOCKfeature for the radio may be used or until --- shows on the display. Next you will use the ignored. If ignored, the system plays normally and the secret code number which you have written down. radio is not protected by the feature. If THEFTLOCK is 5. Press MN and 000 will appear on the display. activated, your radiowill not operateif stolen. When THEFTLOCK is activated, the radio will display 6. Press MN again to make the last two digits agree with your code. LOC to indicate locked condition anytime battery a power has been interrupted.If your battery loses power 7. Press HR to make the first one or two digits agree for any reason,you must unlock the radio with the secret with your code. code before it will operate. 8. Press AM-FM after you have confirmed that the code matches the secret code you have written down. Activating the Theft-Deterrent Feature The display will show REP let you know that you to The instructions which follow explain how to enter your need to repeat Steps through 7 to confirm your 5 secret codeto activate the THEFTLOCK system. is It secret code. recommended that you read through nine steps all 9. Press AM-FM and this time the display will show before starting the procedure. SEC to letyou know that your radio is secure. The NOTE: If you allow more than15 seconds to elapse indicator by the volume control will begin flashing between any steps, the radio automatically reverts to when the ignition is turned off. time and you must start the procedure overStep 4. at 3-26