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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    T1Y Confirmed

    Buick · Regular Production Option

    Value package, discount

    Years 1987 Models 1
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    Documented applications

    Regal — G-body (1983–1987)
    • 1987 Confirmed

      a price discount when D64, UM6 or UX1, U75 or US7 and one of P12, N91, N78 or Y56 are ordered together, with a code the sheet prints as AI3; gnttype.org's 1987 option sheet

    Related codes · mentioned in these notes

    D64N78N91P12U75UM6US7UX1Y56

    This page aggregates every documented appearance of T1Y in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.