I am not 100% sure on this but I think on a HSV there is more to it than the regular Commodore.Even though HSV may have programmed the correct tune in to the ECM the dealer would have to link the Theft Module to the ECM using TechII/MDI. This is the procedure on TIS.
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K20 Engine Control Module: Programming and Setup (L76, L77, L98, LS3)
The following service procedures require either a programming or a setup event performed for a complete repair.
ECM Replacement
Warning: Replacement or reprogramming of the ECM, or replacement of the clutch pedal position sensor (CPPS) or clutch pedal requires that a CPPS learn procedure be performed. Failure to perform the CPPS learn procedure may result in personal injury or damage to the vehicle or its components if the vehicle is in gear and the starter motor is accidentally engaged.
If the engine control module (ECM) is replaced, the following procedures must be performed:
- ECM reset procedure
- ECM reprogramming—Refer to Service Programming System (SPS).
- The Throttle Learn procedure—Refer to Q38 Throttle Body: Throttle/Idle Learn.
- The Crankshaft Position Variation Learn—Refer to Crankshaft Position System Variation Learn.
- The Theft Deterrent Programming—Refer to Theft Deterrent Module (TDM) Programming and Setup.
- Brake Pedal Position Sensor Learn—Refer to Brake Pedal Position Sensor Learn.
- The Clutch Pedal Position Sensor Learn—Refer to Clutch Pedal Position Sensor Learn.
TDM Link to ECM
Important: Performing the TDM link to ECM procedure may require TIS approval. Refer to
Obtaining TIS Approval for more information.
Important: A new TDM is already unlocked and in learn mode, for new TDMs the 10 minute wait to enter learn mode will not be required.
When linking a previously programmed TDM or ECM, or reprogramming all transponder keys, there will be a 10 minute wait while the TDM enters learn mode. There are two types of learn mode:
- When linking an ECM to an existing TDM, the TDM must be unlocked in order to transmit the security data; this does not erase transponder keys. There is no timer displayed for this type of learn.
- When a TDM is linked to an existing ECM or all transponder keys are programmed the TDM must be unlocked in order to transmit the security data and existing transponder keys will be erased. There is a timer displayed for this type of learn. Once the first two keys are programmed, the TDM exits learn mode and allows additional transponder keys to be reprogrammed.
- Install a diagnostic scan tool.
- Key ON, engine OFF, select Body.
- Select Theft Deterrent.
- Select Programming.
- Select V6 or V8 engine, depending on the vehicle being reprogrammed.
- Select Theft Deterrent link to ECM.
- Obtain TIS approval then repeat steps 1–6. Important: The Security Code is a four digit code that is located on the vehicle security card supplied with the vehicle. For more details on the vehicle security card refer to the owner handbook.
- Enter Security Code and follow the directions displayed on the screen. Important: To perform the TDM Link to ECM as a security measure two pre-programmed transponder keys must be present. The TDM will unlock and learn the first of the transponder keys, the second transponder key must then be inserted and accepted by the TDM. When the TDM has recognized both valid transmitter keys it will then move to link to the ECM.
Important: If two transponder keys are not present at the time of reprogramming a possible vehicle non-start event can occur.