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

    Provenance

    Sources & verification

    Where the data comes from, and how it was checked. Both documents are reproduced verbatim from the source repository.

    Master Bibliography — GM RPO Code Reference

    All sources used across the compilation, grouped by division. Per-model documents list the subset of sources actually used for that model.

    Status: all seven divisions complete (Buick, Chevrolet passenger cars, Corvette, Chevrolet/GMC trucks, Pontiac, Oldsmobile, Cadillac).

    Cross-division

    Buick

    Chevrolet — Corvette

    Chevrolet & GMC — Trucks

    Pontiac

    Oldsmobile

    Chevrolet — Passenger cars

    Cadillac

    Source Verification Notes

    Results of an adversarial verification pass (3 independent votes per claim; 2/3 refutes kill a claim) run 2026-07-12 over the sources used in this compilation. 25 claims verified: 21 confirmed, 4 refuted.

    Confirmed — the authoritative source map

    Division Primary source (verified) Notes
    Chevrolet cars GM Heritage Archive kits (691 PDFs) + CRG camaros.org (Camaro 67–69) + chevellestuff.net (Chevelle 64–72) Kits per-model/per-year with predictable URLs; Impala kits exist only for 1967, 1968, 1980, 1981
    Chevrolet trucks GM Heritage Archive (69 truck kits) + 73-87.com / outintheshop.com
    Corvette GM Heritage kits + Corvette Action Center See refuted note on CorvSport below
    Cadillac GM Heritage Archive (96 kits, 1902–1974) Covers the whole classic window
    Oldsmobile GM Heritage Archive — exactly 4 kits (1969–71 442, 1972 Cutlass/442) 1970 kit verified to contain genuine per-series RPO tables (F41, FE2, W-30, W25 …), 339 pages; all other Olds years need club sources
    Pontiac PHS (Pontiac Historic Services) — factory billing records, 1961–1986 only Paid, per-VIN; NOT a downloadable code list; does not cover 1960
    Buick No verified archival RPO source exists online GM directs pre-1982 Buick records to the Alfred P. Sloan Museum (Flint, MI)
    GMC No verified archival RPO source Shares Chevrolet truck RPOs; GMC-specific trim codes from enthusiast sources only

    GM Heritage Archive relocated: gmheritagecenter.com now 301-redirects to https://www.gm.com/heritage/archive/vehicle-information-kits (906 PDF kits, count snapshotted 2026-07-12). Kit PDFs live under gm.com/content/dam/company/no_search/heritage-archive-docs/vehicle-information-kits/<brand>/. All kits are image scans with no text layer — an OCR pass is the single highest-value follow-up for this compilation.

    Verified per-code spot checks: Z28 (602 built 1967 @ $340 / 7,199 @ $380 / 20,302 @ $435), Z22 RS, Z27 SS, L78, COPO 9560 ZL1 (CRG, high confidence); A01 tinted glass 1964–72, M20 vs M21 close-ratio (M21 1966–70 only; close-ratio Muncies ordered under M20 before 1966), L30 327ci (chevellestuff, high confidence).

    Refuted — treat with suspicion

    1. CorvSport "complete per-year Corvette RPO coverage" — refuted 0–3. Our Corvette docs are anchored on Corvette Action Center with CorvSport as one of five cross-check families, so they stand; but CorvSport alone must not be treated as a complete per-year source.
    2. PHS "fully covers 1960–1982" — refuted. PHS is 1961–1986; 1960 Pontiacs have no PHS path, and some microfilm copies are partially illegible. Pontiac doc gap notes updated accordingly.
    3. roadkillcustoms.com as GMMA-provenance kit index — refuted. Its links are an unofficial index; provenance claims don't hold.
    4. "All kit links hosted on gmheritagecenter.com" — refuted. The archive moved to gm.com (see above); old URLs redirect.

    Caveats for maintainers

    • Pricing conventions differ across sources (CRG lists List$ vs List$+D&H) — when adding prices, state which convention the row uses.
    • chevellestuff.net rows mix in Monte Carlo/El Camino-shared options and internal accounting codes; Chevelle rows should be scoped per-row.
    • Split-vote (2–1) items carried with footnotes: 1967 Z28 production accounting; L30's non-exclusivity to the Chevelle.

    Open leads (next research round)

    • Check Wayback Machine captures of pre-redesign gmheritagecenter.com for Pontiac/Buick/GMC kits dropped from the current gm.com index.
    • Alfred P. Sloan Museum / Buick Club of America — do they publish per-year option lists? (No compiled Buick RPO source verified online.)
    • NCRS specification guides as the per-year Corvette source to replace CorvSport's refuted completeness claim.
    • A compiled year-by-year Pontiac UPC list (PHS publications, club archives) to substitute for PHS's per-vehicle-only service.
    • OCR the GM Heritage kit scans (Chevrolet 691, Cadillac 96, Olds 4, trucks 69) — unlocks factory-verified per-year tables for most of the thin spots recorded in the division docs.