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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    ZN1 Factory-verified

    Chevrolet · Regular Production Option

    Trailer package

    Years 1969, 1977–82 Models 2 Factory citations 5

    Also described as Special order springsTrailer Package

    Documented applications

    Corvette (C3)
    • 1977 Factory-verified

      $83.00; 289 built

      GM Heritage factory kit — 1977 Chevrolet Corvette, p.48.
    • 1978 Factory-verified

      $89.00; 972 built

      GM Heritage factory kit — 1978 Chevrolet Corvette, p.22.
    • 1979 Factory-verified

      $98.00; 1,001 built

      GM Heritage factory kit — 1979 Chevrolet Corvette, p.7.
    • 1980 Factory-verified

      $105.00; 796 built

      GM Heritage factory kit — 1980 Chevrolet Corvette, p.6.
    • 1981 Factory-verified

      $110.00; 916 built (final documented year)

      GM Heritage factory kit — 1981 Chevrolet Corvette, p.5.
    • 1982 Disputed

      Disputed existence: CorvSport's page mentions ZN1 at $110 for 1982, but CAC and CorvetteStory omit it from their 1982 tables entirely — and the factory kit contains no ZN1 / trailer entry anywhere, corroborating that the trailer package was dropped for 1982

    Related codes · mentioned in these notes

    796

    This page aggregates every documented appearance of ZN1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.