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Home >> Cadillac >> 2005 >> CTS V >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Controls - 2.8L - Introduction) >> Description and Operation >> Engine Control Module (ECM) Description >> Theft Deterrent System Frequency Code Programming
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Theft Deterrent System Frequency Code Programming

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This vehicle is equipped with a theft deterrent system which interfaces with the ECM. If the ECM is replaced, program the new ECM with the frequency code of the theft deterrent module that is currently on the vehicle. The vehicle will not start until this procedure is completed.