S3O ✓ Factory-verified

GMC · Regular Production Option

LPO, outside rearview mirror projection lights with HUMMER EV logo

Years 2025–26 Models 2 Factory citations 4

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Documented applications

Hummer EV Pickup (2022–2027) →

• 2025–2026 ✓ Factory-verified
  ⛭ GM factory document — 2025 gmc hummer ev pickup fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.

Hummer EV SUV — BT1 (2024–2027) →

• 2025–2026 ✓ Factory-verified

  included in the Illumination Packages (PCI, PEL). GM prints a letter O here; no zero form exists in GM lists. 2025: O in 1SF, 1SG; 2026: O in 1SF, 1SG; not offered in 3VL.

  ⛭ GM factory document — 2025 gmc hummer ev suv fleet order guide, p.20.

  ⛭ GM factory document — 2026 gmc hummer ev suv fleet order guide, p.24.

Related codes · mentioned in these notes

1SF1SG3VLPCIPEL

This page aggregates every documented appearance of S3O in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.