YM8 ✓ Factory-verified

GMC · Regular Production Option

Identification, limited personalization option (LPO)

Years 2015–20, 2023–26 Models 2 Factory citations 6

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Also documented for Chevrolet

Documented applications

Savana — 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 — 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 — 2026 chevrolet my26 express savana electrical bbm, p.13.

Sierra — T1XX (2019–2026) →

• 2019–2020 ✓ Factory-verified internal
  ⛭ GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.15.

  ⛭ GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.16.

This page aggregates every documented appearance of YM8 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.