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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    S78 Factory-verified

    Cadillac · Regular Production Option

    Electric drive unit

    Years 2025 Models 1 Factory citations 1
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    Also documented for Chevrolet

    Documented applications

    Related codes · mentioned in these notes

    1

    This page aggregates every documented appearance of S78 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.