2000 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

Radio Anti-Theft Feature (THEFTLOCK(R)) Disabling

WARNING: This page is about a different car, the 2002 Pontiac Firebird and 2002 Chevrolet Camaro. 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. Turn ignition switch to ACC or RUN position. Turn radio off.
  2. Press and hold 1 and 4 buttons simultaneously until radio displays "SEC".
  3. Press MN. Radio will display "000".
  4. Press MN again until last 2 digits agree with secret code.
  5. Press HR until first 2 digits agree with secret code.
  6. Press AM-FM. Radio will display "- - -" indicating radio is no longer secure. If secret code entered is incorrect, radio will display "SEC", indicating radio will remain secured until correct secret code is entered.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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