EA1 ✓ Factory-verified

GMC · Regular Production Option

Map pocket, driver seatback

Years 2019, 2025–27 Models 2 Factory citations 4

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Also documented for BuickChevrolet

Documented applications

Terrain — Second generation (D2XX) (2018–2024) →

• 2019 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2019 gmc terrain order guide copy gm authority, p.4, p.33.

Terrain — Third generation (2025–2027) →

• 2025–2027 ✓ Factory-verified

  S on all trims

  ⛭ GM factory document — 2025 gmc next generation terrain fleet order guide, p.2.

  ⛭ GM factory document — 2026 gmc next generation terrain fleet order guide, p.3.

  ⛭ GM factory document — 2027 gmc terrain fleet order guide, p.4.

This page aggregates every documented appearance of EA1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.