Chevrolet Silverado — T1XX (fourth-gen) (2019–2026)

NICB's VIN manuals show the Silverado 1500 in Work Truck, Custom, LT, RST, LTZ and High Country lines with 4x2 and 4x4 drive, with Trail Boss Custom and Trail Boss LT (4x4) lines from 2019 and ZR2 and LT-L (4x4) lines in the 2022 and 2026 manuals. NICB 2022 also lists the Silverado LTD under this line's VIN codes (VIN positions 5 and 6 WA–YJ; Work Truck, Custom, LT, RST, LTZ, High Country, Trail Boss Custom, Trail Boss LT and LT-L), so this doc covers the 2022 LTD; the 2019 "Silverado LD" is a K2XX and belongs to that doc. GM's own lists here are the RPO code pages of the Silverado 1500 fleet order guides for 2020, 2025 and 2026 (with the 2025 and 2026 COLOR AND TRIM and trim-group pages) and the RPO code lists of the GM Upfitter Silverado 1500 electrical body builder manuals for 2022 (new model and LTD), 2023, 2024, 2025 and 2026, which add years to many rows. No GM RPO list in the repository covers 2019 or 2021, so those years rest on NICB's VIN tables, except that 21 rows carry 2019 from the 2019 Silverado 1500 order guide (April 20, 2018; a repository copy of the GM Authority file, cited as a factory document) and 10 single-source rows carry 2021 from a GM Authority article (both named under Other sources), and apart from the trim-group, paint and interior trim rows no source here separates trims or body styles.

Codes

Engines

Transmissions

Axles

Packages & Trims

Equipment

Paint

Interior Trim

Internal / Process

Sources

Factory documents (T1)

• chevrolet/2020-chevrolet-silverado-1500-fleet-order-guide-wayback.txt — 2020 Chevrolet Silverado 1500 — GM Fleet Order Guide (Wayback Machine captures), RPO codes page (p.1) and product page (p.3) — https://web.archive.org/web/20220615162000/https://www.gmfleetorderguide.com/NASApp/domestic/rpocodes.jsp?year=2020&regionID=1&lang=1&divisionID=1&vehicleID=21795
• chevrolet/2025-chevrolet-silverado-1500-retail-and-fleet-fleet-order-guide-rpo-codes.txt — 2025 Chevrolet Silverado 1500 Retail and Fleet — GM Fleet Order Guide, RPO Codes
• chevrolet/2025-chevrolet-silverado-1500-retail-and-fleet-fleet-order-guide.txt — 2025 Chevrolet Silverado 1500 Retail and Fleet — GM Fleet Order Guide (Print All), trim groups and COLOR AND TRIM pages
• chevrolet/2026-chevrolet-silverado-1500-retail-and-fleet-fleet-order-guide-rpo-codes.txt — 2026 Chevrolet Silverado 1500 Retail and Fleet — GM Fleet Order Guide, RPO Codes
• chevrolet/2026-chevrolet-silverado-1500-retail-and-fleet-fleet-order-guide.txt — 2026 Chevrolet Silverado 1500 Retail and Fleet — GM Fleet Order Guide (Print All), trim groups, COLOR AND TRIM pages and wheel wording
• chevrolet/2022-chevrolet-22-silverado-1500-new-electrical-body-builder-042822.txt — 2022 Chevrolet LD (1500) NEW model ELECTRICAL Body Builder Manual (GM Upfitter), RPO code list
• chevrolet/2022-chevrolet-22-silverado-1500-ltd-electrical-body-suilder-sm-en-us-u-2021oct08.txt — Chevrolet Silverado LTD Pickup ELECTRICAL section (GM Upfitter), RPO code list
• chevrolet/2023-chevrolet-23-silverado-1500-electrical-body-builder-sm-en-us-2022oct24.txt — Chevrolet Silverado LD (1500) ELECTRICAL Body Builder Manual, 2023 (GM Upfitter), RPO code list
• chevrolet/2024-chevrolet-24-silverado1500-electrical-body-builder-2023nov29.txt — Chevrolet Silverado LD (1500) ELECTRICAL Body Builder Manual, 2024 (GM Upfitter), RPO code list
• chevrolet/2025-chevrolet-my25-silverado-1500-electrical-bbm.txt — Chevrolet Silverado LD (1500) ELECTRICAL Body Builder Manual, 2025 (GM Upfitter), RPO code list
• chevrolet/2019-chevrolet-silverado-1500-all-new-order-guide-copy-gm-authority.txt — All-New 2019 Chevrolet Silverado 1500 — GM order guide, April 20, 2018 (GM Authority copy); origin https://gmauthority.com/blog/wp-content/uploads/2018/04/All-New-2019-Chevrolet-Silverado-1500-Order-Guide-April-20-2018.pdf
• chevrolet/2026-chevrolet-silverado-1500-electrical-body-builder-manual-service-manual-2026-en-us.txt — Chevrolet Silverado LD (1500) ELECTRICAL Body Builder Manual, 2026 (GM Upfitter), RPO code list

Other sources

• NICB VIN manuals in the repository (read 2026-10-14; no web request): docs/reference/nicb/nicb2019-gm.txt pp.172–173, nicb2020-gm.txt p.165, nicb2022-gm.txt pp.161–163 (2021 and 2022 columns, with the Silverado LTD), nicb2025-gm.txt and nicb2026-gm.txt pp.150–151 (2025 and 2026 columns; engine RPO tables)
• GM Authority, read 2026-10-14 through the Firecrawl CLI, the owner's allowed route for gmauthority.com (a direct fetch is answered with HTTP 403), one request at a time and at least 15 seconds apart; no login wall, CAPTCHA, terms against automated access or HTTP 429 appeared on any page. Pages read for the corroboration sample: the 2019 Silverado 1500 order guide copy https://gmauthority.com/blog/wp-content/uploads/2018/04/All-New-2019-Chevrolet-Silverado-1500-Order-Guide-April-20-2018.pdf (GM order guide of April 20, 2018, LT to High Country; now a repository file under Factory documents (T1), cited by page in the 2019 rows, and this URL is its origin); https://gmauthority.com/blog/2021/04/2021-chevy-silverado-1500-heres-whats-new-and-different/ (article, source of the 2021 single-source rows); https://gmauthority.com/blog/2022/04/2022-chevy-silverado-1500-gets-new-glacier-blue-metallic-color-first-look/ (2022 colors); https://gmauthority.com/blog/2022/06/2023-chevy-silverado-1500-to-lose-these-two-paint-colors/ (2023 colors); https://gmauthority.com/blog/2023/09/here-are-all-the-2024-chevy-silverado-1500-paint-colors/ and https://gmauthority.com/blog/2023/12/here-are-all-the-2024-chevy-silverado-1500-interior-colors/ (2024 paint and interior codes, agreeing with the rows); https://gmauthority.com/blog/gm/chevrolet/silverado/2019-chevrolet-silverado/2019-chevrolet-silverado-1500/2019-chevrolet-silverado-1500-colors/2019-chevrolet-silverado-1500-interior-colors/ (2019 interior codes, read only; no 2019 year added from it because it is an article).