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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    U76 Factory-verified

    GMC · Regular Production Option

    Antenna, windshield

    Years 1983–87 Models 3 Factory citations 10
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    Also documented for BuickChevroletOldsmobilePontiac

    Documented applications

    Jimmy (full-size) — Square body (1983–1991)
    • 1984, 1985 Factory-verified

      included with the radios; shared square-body platform code; cited from the Chevrolet Blazer kit

      GM Heritage factory kit — 1984 Chevrolet Blazer RV Full Size, p.19.
      GM Heritage factory kit — 1985 Chevrolet Blazer RV Full Size, p.12.
    Sierra — Square body (1983–1991)
    • 1984–1987 Factory-verified

      shared platform code; cited from the square-body C/K pickup kits

      GM Heritage factory kit — 1984 Chevrolet Truck, p.46.
      GM Heritage factory kit — 1985 Chevrolet Truck, p.44.
      GM Heritage factory kit — 1986 Chevrolet Truck, p.157.
      GM Heritage factory kit — 1987 Chevrolet Truck, p.59.
    Suburban — Square body (1983–1991)
    • 1983–1986 Factory-verified

      included with the radios; shared square-body platform code; cited from the Chevrolet Suburban kit

      GM Heritage factory kit — 1983 Chevrolet Suburban, p.17.
      GM Heritage factory kit — 1984 Chevrolet Suburban, p.23.
      GM Heritage factory kit — 1985 Chevrolet Suburban, p.20.
      GM Heritage factory kit — 1986 Chevrolet Suburban, p.21.

    This page aggregates every documented appearance of U76 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.