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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    LF9 Factory-verified

    GMC · Regular Production Option

    Engine, 5.7L V8 diesel, 350 cu in

    Years 1983–84 Models 1 Factory citations 2
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    Also documented for BuickCadillacChevroletOldsmobilePontiac

    Documented applications

    Caballero — G-body (1983–1987)
    • 1983–1984 Factory-verified

      Optional; not with UF7, U14, F41 or N23; shared G-body platform code; cited from the joint El Camino/Caballero pages of the Chevrolet El Camino kits

      GM Heritage factory kit — 1983 Chevrolet El Camino, p.5.
      GM Heritage factory kit — 1984 Chevrolet El Camino, p.5.

    Related codes · mentioned in these notes

    F41N23U14UF7

    This page aggregates every documented appearance of LF9 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.