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Home >> Chevrolet >> 2000 >> Astro Van Passenger, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 16 (Body Control Modules) >> Programming >> Radio Anti-Theft Feature (THEFTLOCK(R)) Activating
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Radio Anti-Theft Feature (THEFTLOCK(R)) Activating

WARNING: This page is about a different car, the 2001 GMC Safari and 2001 Chevrolet Astro. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Allowing more than 15 seconds to elapse between each action in this procedure will cause radio to automatically revert to time function.
  1. Choose a secret code number by writing down any 3 or 4 digit number from 000-1999.
  2. Turn ignition switch to ACC or RUN position.
  3. Turn radio off.
  4. Press and hold 1 and 4 buttons simultaneously until radio displays "- - -". Enter secret code number chosen in step  1 .
  5. Press MN. Radio will display "000".
  6. Press MN again until last 2 digits agree with secret code.
  7. Press HR until first 2 digits agree with secret code.
  8. Press AM-FM. Radio will display "REP" indicating steps  57 must be repeated to confirm secret code.
  9. Press AM-FM. Radio will display "SEC" indicating radio is secure. Light Emitting Diode (LED) indicator by volume control will begin to flash once ignition switch is turned to OFF position.