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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    U83 Confirmed

    Chevrolet · Regular Production Option

    Power tri-band antenna (AM/FM/CB)

    Years 1976–79 Models 1

    Documented applications

    This page aggregates every documented appearance of U83 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.