K12 ✓ Factory-verified

GMC · Regular Production Option

Air filter, pollutant

Years 2025–27 Models 4 Factory citations 11

Query this via API →

Also documented for BuickCadillacChevroletOldsmobilePontiac

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
  ⛭ GM factory document — 2025 gmc hummer ev suv fleet order guide, p.1.

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

Sierra EV — BT1 (2024–2027) →

• 2025–2027 ✓ Factory-verified
  ⛭ GM factory document — 2025 gmc sierra ev denali fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 gmc sierra ev denali fleet order guide, p.1.

  ⛭ GM factory document — 2027 gmc sierra ev fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 gmc sierra ev fleet order guide, p.3.

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.1.

  ⛭ GM factory document — 2026 gmc next generation terrain fleet order guide, p.2.

  ⛭ GM factory document — 2027 gmc terrain fleet order guide, p.2.

This page aggregates every documented appearance of K12 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.