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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    UB4 Factory-verified

    GMC · Regular Production Option

    Lamps, rear side marker

    Years 1984 Models 1 Factory citations 1
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    Also documented for Chevrolet

    Documented applications

    Vandura and Rally — Second generation G-series (1983–1996)
    • 1984 Factory-verified

      shipped loose for body company installation; standard on Hi-Cube vans; 1984 from the February 1984 data book pages in the mislabelled G-Van kit file; shared G-van platform code; cited from the Chevrolet G-Van kit

      GM Heritage factory kit — 1985 Chevrolet G Van, p.84.

    This page aggregates every documented appearance of UB4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.