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  1. Can anyone help me with decoding my rpo list. I am trying to find out which calipers I need. Thanks All.

    General GM Discussions
    Thanks all again for your help. I need the RPO'S decoded to know what calipers and other things. A GMC dealer told me my truck was an HD but no badges. Maybe someone can help me with this. Thanks. I attached a picture of my RPO's. Respectfully, Michael Hogan
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