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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    NL2 Factory-verified

    GMC · Regular Production Option

    Fuel tank, auxiliary

    Years 1984–87 Models 1 Factory citations 4
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    Also documented for CadillacChevrolet

    Documented applications

    Sierra — Square body (1983–1991)
    • 1984–1987 Factory-verified

      shared platform code; cited from the square-body C/K pickup kits; right-hand frame mounted

      GM Heritage factory kit — 1984 Chevrolet Truck, p.47.
      GM Heritage factory kit — 1985 Chevrolet Truck, p.46.
      GM Heritage factory kit — 1986 Chevrolet Truck, p.156.
      GM Heritage factory kit — 1987 Chevrolet Truck, p.60.

    This page aggregates every documented appearance of NL2 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.