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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    YP4 (Y) Confirmed

    Cadillac · Regular Production Option

    **Seville Elegante** package (two-tone, perforated-leather 40/40, wire wheels)

    Years 1978–79 Models 1

    Also described as Seville Elegante package

    Documented applications

    Seville
    • 1978 Confirmed

      $2,600

    • 1979 Confirmed

      $2,735; w/ Astroroof $3,873, w/ sunroof $3,663

    Related codes · mentioned in these notes

    23

    This page aggregates every documented appearance of YP4 (Y) in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.