Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Cadillac CTS AutomaticFACTORY OEM SERVICE PROCEDURE
10-Minute Learn Procedure
CAUTION:
When replacing either the Passkey® III (PK3) keys, ECM or theft deterrent control module and the 10-minute relearn procedure is used, ensure that the appropriate calibration is selected for the replacement component on the calibration selection screen of the service programming system. The appropriate calibrations for specific VTD system components are described below:
- When replacing PK3 keys and the 10-minute relearn procedure is used, the Vehicle Theft Deterrent Learn for Passkey III System Control Module calibration is required. This clears all previously learned keys from the theft deterrent control module and enables the theft deterrent control module to learn new PK3 keys.
- When replacing an ECM that has previously learned another vehicles theft deterrent control modules fuel continue password and the 10-minute relearn procedure is used, the Vehicle Theft Deterrent Learn for Powertrain System Control Module calibration is required. This clears the previously learned fuel continue password in the ECM and enables the ECM to learn the next fuel continue password it receives.
- When replacing a theft deterrent control module and the 10-minute relearn procedure is used, the Vehicle Theft Deterrent Learn for Powertrain System Control Module calibration is required. This clears the previously learned fuel continue password in the ECM and enables the ECM to learn the next fuel continue password it receives.
Factory Service Tools
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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.