1998 GMC Safari Owner's Manual - Page 179

Unlocking the Theft-Deterrent Feature After a Power Loss Enter your secret code as follows; pause no more than 15 seconds between steps: 1. LOC appears when the ignition is on. 2. Press MN and 000 will appear on the display. 3. Press MN again to make the last two digits agree with your code. 4. Press HR to make the first one or two digits agree with your code. 5. Press AM-FM after you have confirmed that the code matchesthe secret codeyou have written down. The display will show SEC, indicating the radio is now operable and secure. If you enter the wrong code eight times, INOP will appear on the display. will have to wait an hour You with the ignition on before you can again. When you try try again, you will only have three chances enter the to correct code before INOP appears. If you lose or forget your code, contact your dealer. Disabling the Theft-Deterrent Feature Enter your secret code as follows; pause no more than 15 seconds between steps: 1. Turn the ignition to ACCESSORY or RUN. 2. Turn the radio off. 3. Press the 1 and 4 buttons together. Hold them down until SEC shows on the display. 4. Press MN and 000 will appear on the display. 5. Press MN again to make the last two digits agree with your code. 6. Press HR to make thefirst one or two digits agree with your code. 7. Press AM-FM after you have confirmed that the code matches the secret code have written down. you The display will show indicating that the radio ---, is no longer secured. If the code entered incorrect, SEC will appear on the is display. The radio will remain secured until the correct code is entered. When battery power is removed and applied to a later secured radio, the radio won't on and LOC will turn appear on the display. To unlock a secured radio, see "Unlocking the Theft-Deterrent Feature After Power Loss" earlier a in this section. 3-27