How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Ron Your Own Question
Ron, ASE Certified Technician
Category: Chevy
Satisfied Customers: 36069
Experience:  35 years experience with ASE Certs
Type Your Chevy Question Here...
Ron is online now
A new question is answered every 9 seconds

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: 1 year ago.
Category: Chevy
Expert:  Ron replied 1 year 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.

Post back if you have more questions and or need more help.