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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    R6K Factory-verified

    Cadillac · Regular Production Option

    In-Vehicle Apps

    Years 2026 Models 1 Factory citations 1
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    Also documented for BuickChevroletGMCHummer

    Documented applications

    Related codes · mentioned in these notes

    S

    This page aggregates every documented appearance of R6K in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.