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  • Retarder Solenoid Plug Part # (Just an FYI)

    Posted by Jeff on July 19, 2022 at 10:12 am

    Posting for the benefit of someone in the future who also uses the search function for solutions.

    If you ever get Allison Code 45-26 Retarder N Solenoid Open Circuit, be sure to also check the terminals IN the plug going into the solenoid – found one of the terminals in my plug had broken sometime in the past. (retarder still worked, yet found the code)

    OEM PART # is 12102620

    Car Quest part number can be seen in the photo

    Jeff replied 4 years, 1 month ago 1 Member · 0 Replies
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