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

    Source document

    docs/rpo/oldsmobile/silhouette-u-body-1990.md

    Interactive view →

    Rendered verbatim from the reference. Factory citations shown as ⛭ GM Heritage — …. For filtering, badges, and crosslinks, use the interactive Silhouette — U-body (1990–1996) page.

    Oldsmobile Silhouette — U-body (first generation) (1990–1996)

    Wikipedia describes the first-generation Oldsmobile Silhouette as a minivan built at North Tarrytown, New York, from August 1, 1989 to June 26, 1996 for model years 1990–1996, with the 3.1L LG6 V6 for 1990–1995, the 3800 3.8L V6 (L27) as an option for 1992–1995 and the 3.4L LA1 V6 as the only engine for 1996; it names the transmissions by type (a 3 speed 3T40 and a 4 speed 4T60-E automatic) but prints no transmission code. The NICB VIN manuals of these years list Multi Purpose Vehicle lines for Chevrolet, GMC and Pontiac but none for Oldsmobile, and no Oldsmobile order guide, RPO list or Heritage kit for this van is in the archive. The remaining codes therefore come from the Chevrolet Lumina APV kits, the Silhouette's U-body twin, and only the weight pages listed for this doc (1992–1995), cited for engine, transmission and chassis codes the two vans share. The 1990, 1991 and 1996 kit pages listed for this doc print none of these codes. Every option, package, paint and trim code is a gap in the sources, not a finding that it was not offered.

    Codes

    Engines

    Code Description Years Models/Notes Confidence
    LG6 Engine, 3.1L V6 1990–1995 Wikipedia's Silhouette article gives LG6 in the first-generation infobox and lists the 3.1 LG6 V6 for 1990–1995, which dates 1990 and 1991 (no listed kit page prints LG6 for those years); 1992–1995 from the single-condition remarks "W/3.1L Engine, LG6" on the engine block heater lines of the optional-equipment weight pages (1993 and 1994 on p.40, 1992 on p.42, 1995 on p.77); the Chevrolet Lumina APV doc adds electronic fuel injection from a powertrain page not cited here; shared U-body code; cited from the Chevrolet Lumina APV kit ⛭ GM Heritage — 1992 Chevrolet LuminaAPV, p.42 ⛭ GM Heritage — 1993 Chevrolet LuminaAPV, p.40 ⛭ GM Heritage — 1994 Chevrolet LuminaAPV, p.40 ⛭ GM Heritage — 1995 Chevrolet LuminaAPV, p.77 single-source
    L27 Engine, 3800 3.8L V6, multiport fuel injection 1992–1995 requires M13; optional (Wikipedia: optional from 1992, replaced for 1996); Wikipedia's Silhouette infobox gives L27 for the generation; the weight pages print the engine's own line (1992 p.42, 1994 p.40, 1995 p.79; the 1993 p.40 line prints it as 127) and the remarks "W/3800 Engine, L27" on the block heater lines; 1995: not on the cargo van, as the kit marks it; shared U-body code; cited from the Chevrolet Lumina APV kit ⛭ GM Heritage — 1992 Chevrolet LuminaAPV, p.42 ⛭ GM Heritage — 1993 Chevrolet LuminaAPV, p.40 ⛭ GM Heritage — 1994 Chevrolet LuminaAPV, p.40 ⛭ GM Heritage — 1995 Chevrolet LuminaAPV, p.79 single-source
    LA1 Engine, 3.4L V6 1996 the only engine for 1996 per Wikipedia's Silhouette article (first-generation infobox and 1996 section), which is the only source cited; no listed kit page for 1996 prints the code, so the row is single-source; the Chevrolet Lumina APV doc gives sequential fuel injection from a 1996 power teams page not cited here; shared U-body code single-source

    Transmissions

    Code Description Years Models/Notes Confidence
    M13 Transaxle, 4 speed automatic 1992–1995 with the L27, which it requires; the kit pages print "4-Speed Automatic Transmission"; matched to the unit by meaning: Wikipedia gives the 3800 a 4 speed 4T60-E automatic from 1992 but prints no code; 1995: not on the cargo van; 1996 is not claimed because no listed 1996 kit page prints M13; shared U-body code; cited from the Chevrolet Lumina APV kit ⛭ GM Heritage — 1992 Chevrolet LuminaAPV, p.42 ⛭ GM Heritage — 1993 Chevrolet LuminaAPV, p.40 ⛭ GM Heritage — 1994 Chevrolet LuminaAPV, p.40 ⛭ GM Heritage — 1995 Chevrolet LuminaAPV, p.79 single-source

    Equipment

    Code Description Years Models/Notes Confidence
    NW9 Traction control 1994 requires L27; the kit marks it interim availability; matched to the item by meaning: Wikipedia says traction control was available with the 3800 for 1994 and 1995 but prints no code; 1995 is left out because the 1995 kit page lists traction control without a code; shared U-body code; cited from the Chevrolet Lumina APV kit ⛭ GM Heritage — 1994 Chevrolet LuminaAPV, p.40 single-source

    Sources

    Factory documents (T1)

    No Oldsmobile factory document for the 1990–1996 Silhouette is in docs/factory-docs/ or docs/heritage-ocr/. The rows cite the Heritage kits of the Chevrolet Lumina APV, the Silhouette's U-body twin, for shared engine, transmission and chassis codes only, on their listed RPO pages (owner, 2026-10-03):

    • [HK] chevrolet/1992-Chevrolet-LuminaAPV.txt — MVMA specifications, model year 1992, optional equipment weights (p. 42)
    • [HK] chevrolet/1993-Chevrolet-LuminaAPV.txt — MVMA specifications, model year 1993, optional equipment weights (p. 40)
    • [HK] chevrolet/1994-Chevrolet-LuminaAPV.txt — MVMA specifications, model year 1994, optional equipment weights (p. 40)
    • [HK] chevrolet/1995-Chevrolet-LuminaAPV.txt — MVMA specifications (AAMA-95 footer), model year 1995, optional equipment weights (pp. 77, 79)
    • Read but not cited: the 1990 kit (pp. 2, 12), the 1991 kit (pp. 3, 14–15, 44, 47–48, 53–54), the 1992 kit (pp. 41, 43, 49), the 1993 kit (pp. 39, 41), the 1994 kit (pp. 39, 41, 46), the 1995 kit (pp. 89, 91) and the 1996 kit (pp. 29–30): they print none of the doc's codes, or only codes the cited pages already date

    Other sources

    • https://en.wikipedia.org/wiki/Oldsmobile_Silhouette — first-generation infobox (engine codes, transmissions, assembly, production dates), engine list and year-by-year sections (retrieved 2026-11-05 as wikitext, action=raw)
    • NICB VIN manuals: docs/reference/nicb/nicb1990-gm.txt through nicb1996-gm.txt — Multi-Purpose Vehicle lines for GMC, Pontiac and Chevrolet only; no Oldsmobile line in any of them; T4, no RPO codes