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Ron
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 34181
Experience:  35 years experience with ASE Certs
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Does a Engine computer replacement need to be flashed before

Customer Question

Does a Engine computer replacement need to be flashed before or after installation?
Submitted: 8 months ago.
Category: Chevy
Expert:  Ron replied 8 months ago.

Hello and thank you for your question Ron,

anytime you replace the ECM it dose require flashing and this needs to be done before the install .Once you have done the programming you can run the relearn procedure so the new ECM can learn the keys. If the computer has been flashed then try running the relearn procedure. See it in the link below, copy and paste the link to your browser to see the steps.

https://dl.dropboxusercontent.com/u/104923897/Re-learn%20Jun%2027.pdf

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