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Home >> Cadillac >> 1999 >> Catera V6-3.0L VIN R >> Repair and Diagnosis >> Accessories and Optional Equipment >> Antitheft and Alarm Systems >> Service and Repair >> Programming Replacement Keys, Ign Cyl, or ECM >> Programming Engine Control Module (ECM)
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Programming Engine Control Module (ECM)

The ECM must be programmed after installation in a vehicle with an Theft Deterrent Module. New ECMs are delivered with the status immobilizer deactivated. Programming the immobilizer signal into the ECM simultaneously activates the immobilizer function.
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