Error E4491 and E4423

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  • ashabanov
    Junior Member
    • Oct 2012
    • 10

    Error E4491 and E4423

    I purchase ACDELCO #12592124 Engine Control Module (ECM Computer) for 2005 CADILLAC CTS 3.6L V6 DOHC.

    When try to programm it I have following errors:

    1) E4491: Reprogramming error! Check all connections and reset programming interface!
    2) E4423: Unknown reprogramming error

    Please HELP ME
    If you want to donate me, ask how!
  • ashabanov
    Junior Member
    • Oct 2012
    • 10

    #2
    Error E4491 and E4423

    I find solution and extremely disappointed in GM and ACDELCO customers support.

    The problem turned primitive.

    Solution:
    Before you begin, make sure that you PC have following requirements:
    1) Turned off antivirus
    2) Turned of Firewall
    3) And last and most important! Check the latest version of Java on www.Java.com

    I have Java 6 Update 21. After update to version 7 update 9 ECM was successfully programmed.
    If you want to donate me, ask how!

    Comment

    • ashabanov
      Junior Member
      • Oct 2012
      • 10

      #3
      If you have any additional questions ask me!

      If you have any additional questions ask me!
      If you want to donate me, ask how!

      Comment

      • shay
        Junior Member
        • May 2013
        • 6

        #4
        12592124

        Hi
        Do you have more tip for E4491 and E4423 in 12592124 P/N I try everything.
        Thanks
        shay

        Comment

        • badcoupe
          Senior Member
          • Jan 2011
          • 218

          #5
          Make sure java is at the latest update on your pc and that you don't have any firewalls on in your antivirus. I've never had any problems on gm going on 100+ reflashes. I do however have a dealer login instead of of using acdelco site.

          Comment

          • jalil.electronic
            Junior Member
            • Sep 2015
            • 1

            #6
            GM Error code M6954

            Hi
            evry one if you know when i reprogram CAMARO 2108 new ECM i recived message error M6954 .
            thanks.

            jalil

            Comment

            • tech25
              Senior Member
              • Oct 2017
              • 172

              #7
              Originally posted by jalil.electronic
              Hi
              evry one if you know when i reprogram CAMARO 2108 new ECM i recived message error M6954 .
              thanks.

              jalil
              y u reprogram new ecm 2108 unda waranti stil...

              Comment

              • Witsend
                Banned
                • Nov 2012
                • 2942

                #8
                2108 model year is still 89 years off and you might have a nine minute wait between sentences to get tech support's response from Mars
                Attached Files

                Comment

                • bestdamgarage
                  Member
                  • Apr 2016
                  • 99

                  #9
                  Usually you need an older java.The tool box software tells you to turn off firewalss and allow acdelco.com specifically.Why would you use a j box for that if you have a tech 2.

                  Comment

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