Plant code, Wentzville, MO, USA

Years 2003–10, 2014–26 Models 3 Factory citations 26

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Also documented for GMC

Documented applications

Colorado — Second generation (GMT31XX) (2015–2022)

2015–2017, 2019, 2021–2022 Factory-verified internal

; 2021 from the upfitter list GM files for 2021 and 2022

GM factory document — 2015 chevrolet canyon colorado electrical body builders manual service manual 2015 en us, p.16.
GM factory document — 2016 chevrolet canyon colorado electrical body builders manual service manual 2016 en us, p.15.
GM factory document — 2017 chevrolet canyon colorado electrical body builders manual service manual 2017 en us, p.19.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.13.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.14.
2020 Single-source internal

; 2020 from GM Authority's 2020 Colorado page (assembly at GM Wentzville, Missouri)

Colorado — Third generation (2023–2027)

2023–2024, 2026 Factory-verified internal

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.14.
GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.15.
GM factory document — 2026 chevrolet colorado electrical body builder manual service manual 2026 en us, p.10.

Express — GMT610 (2003–2027)

2003–2010, 2014–2018, 2022–2026 Factory-verified internal

GM factory document — 2003 chevrolet express rpo code list, p.1.
GM factory document — 2004 chevrolet express awd rpo code list, p.1.
GM factory document — 2005 chevrolet express awd rpo code list, p.1.
GM factory document — 2006 chevrolet express awd rpo code list, p.1.
GM factory document — 2007 chevrolet express awd rpo code list, p.1.
GM factory document — 2008 chevrolet express rpo code list, p.1.
GM factory document — 2009 chevrolet express rpo code list, p.1.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.17.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.8.
GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.18.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.13.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.11.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.17.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.15.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.16.
GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.15.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.13.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.13.

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