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

    Cadillac · Regular Production Option

    Heater delete

    Years 1960–61, 1964–68 Models 1 Factory citations 6

    Also described as HeaterHeadrestsFront seat headrestsFront shoulder belts

    Documented applications

    DeVille / Calais
    • 1960 Factory-verified

      All

      GM Heritage factory kit — 1960 Cadillac VVI, p.194.
    • 1961 Factory-verified

      On 1961 kit; dropped from 1962 list

      GM Heritage factory kit — 1961 Cadillac VVI, p.129.
    • 1964 Single-source

      Credit option

    • 1965 Factory-verified

      Credit option

      GM Heritage factory kit — 1965 Cadillac VVI, p.153.
    • 1966 Factory-verified

      All

      GM Heritage factory kit — 1966 Cadillac VVI, p.71.
    • 1967–68 Confirmed

      All

    • 1968 Factory-verified

      Convertible only (std on closed bodies); factory kit legend "H → SHOULDER BELTS-FRONT (Convertible only)" (p.16) and option-price grid code H = "SHOULDER BELTS (Front)" (p.147); CLC 1968 accessory list agrees ("H Front shoulder belts")

      GM Heritage factory kit — 1968 Cadillac VVI, p.16.
      GM Heritage factory kit — 1968 Cadillac VVI, p.147.
      https://rrrclc.org/wp-content/uploads/2014/05/19681.pdf

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