Does anyone know if the dealership can reprogram an ECM that was pulled from a salvage vehicle to work with my current C8? Any input is appreciated.

Edit to add further detail.
My car 2021 C8 Z51
Salvage Car 2022 C8 Z51

 

Can't be re-flashed. The new ones don't work like ECMs from 15 years ago.

 

I should have clarified, My car is a 2021, the salvage car is a 2022.

 

Dealer should be able to do it if the parts have not changed from 2021 to 2022. That ECU lock, etc. are to prevent us, not for GM dealers and equipment that programs it.

 

You can do any GM programming yourself with a MDI 2, laptop and a $40 subscription to Techline Connect.

 

As I read the Service Manual, I believe that ECU is a generic term for any of the control modules - the ECM is the engine control module which is what the OP asked about. I believe everyone is correct that the ECM can be programmed with a tool and be used in a different car - I am not certain. But several of the modules, namely the Body Control Module, the Radio and the CGM apparently have a serial number that is linked to VIN that is registered by GM as a "Back Office Registration". This is not specifically mentioned for the ECM though. Honestly, I'm not sure what the CGM is - it is only mentioned in the attached paragraph and never appears anywhere else in the manual. It could be the Serial Gateway Module but I don't know.

Back Office Registration
The Radio must be registered with the GM Back Office in order to receive downloaded information such as approved applications, module
software updates, weather and traffic information for current location. The vehicle must have a Cellular or WiFi connection to complete the initial
registration process. This process will verify the assembly plant factory feed data from the BCM, CGM and Radio serial numbers to the VIN and
if the security checks are met, then the user must complete the registration process by entering email and required personal information. The
registration status can be verified through the Radio â€oeSetting – About selection.
When any of these secured ECU’s are replaced, a new serial number will be recorded during the service calibration process and appended to
the vehicles history data for uninterrupted back office connection.
If the Radio is replaced, the user can recover settings/applications by reregistering the email account. During the initial registration process the user
will enter an email/password. The user will then be sent a follow up verification email link to setup the account completely. If the complete account
setup is not performed the password reset security questions will not be entered, which will prevent reregistering this email account in the future if
the password is forgotten. The radio will operate in Demo Mode or as Guest until a user profile has been set up.

 

Thanks everyone for the feedback. Even the dealership didn't know if it was possible. They do know for sure they can order a new ECM and program it at the dealership for your car. They are surprisingly inexpensive for the new ECM at $300, but they want another $600 to program and update it.