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

    Buick · 1988-1991

    Reatta — E-body derivative (1988–1991)

    reatta

    16 option rows 16 RPO codes 4 model years
    0% Factory-verified
    • ✓ Factory-verified · 0
    • ● Confirmed · 2
    • ◑ Single-source · 14
    • ⚠ Disputed · 0

    Applicable options

    Documented RPO codes

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    Model year
    Code Option Years Notes & factory source Confidence
    Engines
    LN3 Engine, 3.8 L V6, Buick 1988–1990
    the only engine for those years; Wikipedia's infobox gives the LN3 for 1988–1990 and the Reatta Owners Journal prints "LN3 - 3.8 engine" on its Reatta service-code list (two sources agree on the code; Wikipedia dates every year); no Buick or Chevrolet factory page for the Reatta is in the archive
    		 Confirmed
    L27 Engine, 3.8 L V6, Buick 3800 1991
    Wikipedia's infobox and text give the L27 for 1991, replacing the LN3; the Reatta Owners Journal prints "L27 - 3800 engine" on its Reatta service-code list (two sources agree on the code; Wikipedia dates the year)
    		 Confirmed
    Transmissions
    ME9 Transmission, automatic, 4 speed, THM 440-T4 1988–1989
    the Reatta Owners Journal prints "ME9 - Transmission, auto 4 speed THM440 T4" without a year; Wikipedia's infobox names the 440-T4 for 1988–1989 but prints no code, so the code is matched to the unit by meaning; no GM list in the archive prints ME9
    		 Single-source
    M13 Transmission, automatic, 4 speed, 4T60-E 1991
    the Reatta Owners Journal prints "M13 - Transmission (only found on '91 cars)", the dating remark; Wikipedia's infobox gives the 4T60-E for 1991 but prints no code, so the unit match is by meaning
    		 Single-source
    Packages & Trims
    X22 Select Sixty edition 1988
    about 55 cars for Buick's top dealers, black with tan interior; Wikipedia gives the model designation X22 for the 1988 edition; the Reatta Owners Journal lists X22 only as "believed to be marketing code for 1988 Select Sixty"
    		 Single-source
    YP8 Package, merchandised, convertible 1990–1991
    matched to the convertible by meaning: the Reatta Owners Journal prints "YP8 - Merchandised pkg, convertible" without a year, and Wikipedia gives the convertible for 1990 and 1991 but prints no code
    		 Single-source
    Equipment
    AJ3 Restraint, inflatable, driver 1990
    Wikipedia: the 1990 interior redesign added a driver's airbag; the Reatta Owners Journal prints "AJ3 - Restraint, inflatable, driver" without a year; later years are left out because no source read dates the airbag for them
    		 Single-source
    C05 Roof, convertible, folding 1990–1991
    the Reatta Owners Journal prints CO5 (letter O) without a year; GM's service lists print C05 with the same wording; Wikipedia gives the convertible for 1990 and 1991
    		 Single-source
    CA1 Sunroof 1988
    Wikipedia: a sunroof became optional in late 1988; the Reatta Owners Journal prints "CA1 - Sunroof" without a year; no later year is dated by a source read
    		 Single-source
    N60 Wheels, 16 inch aluminum, painted white 1990
    Wikipedia: the 1990 Select Sixty convertibles carried white 16 inch wheels; the Reatta Owners Journal prints "N60 - Aluminum wheels, painted (16 inch white wheels)" without a year; matched by meaning
    		 Single-source
    Paint
    23 Paint, Maui Blue 1990–1991
    years from the Reatta Owners Journal's exterior paint list ("1990-1991 only")
    		 Single-source
    33 Paint, Driftwood 1990
    year from the Reatta Owners Journal's exterior paint list ("1990 only")
    		 Single-source
    48 Paint, Polo Green 1991
    year from the Reatta Owners Journal's exterior paint list ("1991 only")
    		 Single-source
    83 Paint, Sapphire Blue 1988–1989
    years from the Reatta Owners Journal's exterior paint list ("1988-1989 only")
    		 Single-source
    85 Paint, Gunmetal Gray 1990–1991
    years from the Reatta Owners Journal's exterior paint list ("1990-1991 only")
    		 Single-source
    87 Paint, Pewter Gray 1988–1989
    years from the Reatta Owners Journal's exterior paint list ("1988-1989 only")
    		 Single-source

    Source document: buick/reatta-e-body.md. Rows marked — record an option the factory offered whose RPO code is not documented in the consulted sources.