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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    C42 Factory-verified

    Chevrolet · Regular Production Option

    De Luxe Air heater & defroster

    Years 1964–82 Models 1 Factory citations 2

    Also described as Deluxe fresh-air heaterHD (deluxe outside-air) heater

    Documented applications

    C/K Trucks
    • 1964–66 Factory-verified
      GM Heritage factory kit — 1964 Chevrolet Truck, p.15.
      GM Heritage factory kit — 1966 Chevrolet Truck, p.24.
    • 1967–72 Confirmed

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    • 1973–82 Confirmed

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    This page aggregates every documented appearance of C42 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.