Identification, limited personalization option (LPO)

Years 2014–19, 2021–26 Models 5 Factory citations 18

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Also documented for GMC

Documented applications

Bolt EV — first generation (2017–2023)

2023 Factory-verified internal

only in: Bolt EUV

GM factory document — 2023 chevrolet 23 bolt euv body builder sm en us 2022aug29, p.12.

Captiva Sport — Theta (2012–2015)

2014 Factory-verified internal

; 1LS, 2LS, 1LT, LTZ: O (dealer-installed); required by every LPO item

GM factory document — 2014 chevrolet captiva sport fleet fleet order guide wayback, p.3.

City Express (2015–2018)

2015–2018 Factory-verified internal

GM factory document — 2015 chevrolet city express electrical body builders manual service manual 2015 en us, p.10.
GM factory document — 2017 chevrolet city express electrical body builders manual service manual 2017 en us, p.10.
GM factory document — 2018 chevrolet 18 city express bodybuilders sm 2 w cvr pg, p.10.

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

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

; shown only in the shared Colorado/Canyon upfitter lists; 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.14.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.14.

Express — GMT610 (2003–2027)

2015–2018, 2023–2026 Factory-verified internal

GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.19.
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.12.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.18.
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 YM8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.