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    Fuzzy match across codes, option descriptions, and model aliases. Every result is graded and, where the factory documents it, cited.
    UA1 Factory-verified

    Pontiac · Regular Production Option

    Battery, high capacity, wet

    Years 1975, 1985–89, 1998–05 Models 8 Factory citations 12
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    Also described as HD batteryBattery, heavy duty

    Also documented for BuickChevroletGMCOldsmobileSaturn

    Documented applications

    6000 — A-body (1982–1991)
    • 1985–1988 Single-source

      1984 is left out because the page prints the code as UAT and 1989 because its only weight page prints a model year of 1988; the 1987 page is cited although it prints UAl (lower-case L, read as UA1, rule 9(d)); the 1988 page prints UAI, read as UA1; shared A-body code; cited from the Chevrolet Celebrity kits; no 6000 source names it, so the row rests on the kit pages alone

      GM Heritage factory kit — 1985 Chevrolet Celebrity, p.43.
      GM Heritage factory kit — 1986 Chevrolet Celebrity, p.42.
      GM Heritage factory kit — 1987 Chevrolet Celebrity, p.42.
      GM Heritage factory kit — 1988 Chevrolet Celebrity, p.46.
    Fiero (1984–1988)
    • 1987 Confirmed

      1987 from conceptcarz's 1987 list; the OSG gives no year; the rparts and Halderman lists agree

    Firebird — Third generation (1982–1992)
    • 1987–1989 Factory-verified

      Firebird years: 3rdgenformula option pages 1987–1989; shared F-body code; cited from the Camaro kits

      GM Heritage factory kit — 1987 Chevrolet Camaro, p.15.
      GM Heritage factory kit — 1988 Chevrolet Camaro, p.30.

    This page aggregates every documented appearance of UA1 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.