K1O ✓ Factory-verified

GMC · Regular Production Option

Engine air filter monitor

Years 2022–27 Models 4 Factory citations 19

Query this via API →

Also described as Filter monitor, engine airAir filtration monitoring

Also documented for BuickCadillacChevrolet

Documented applications

Canyon — Third generation (VSS-T) (2023–2027) →

• 2023–2024, 2026 ✓ Factory-verified
  ⛭ GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.11.

  ⛭ GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.11.

  ⛭ GM factory document — 2026 gmc canyon electrical body builder manual service manual 2026 en us, p.6.

Sierra HD — T1XX (2020–2027) →

• 2025–2027 ✓ Factory-verified

  Pro, SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: S

  ⛭ GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.11.

  ⛭ GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.10.

  ⛭ GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.8.

Yukon — T1XX (2021–2027) →

• 2022–2023, 2025–2027 ✓ Factory-verified

  2027: S on all trims

  ⛭ GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.11.

  ⛭ GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.11.

  ⛭ GM factory document — 2025 gmc new yukon denali fleet order guide, p.9.

  ⛭ GM factory document — 2026 gmc yukon denali fleet order guide, p.9.

  ⛭ GM factory document — 2027 gmc yukon fleet order guide, p.9.

Yukon XL — T1XX (2021–2027) →

• 2022–2023, 2025–2027 ✓ Factory-verified

  2027: S on all trims

  ⛭ GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.11.

  ⛭ GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.11.

  ⛭ GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.9.

  ⛭ GM factory document — 2026 gmc yukon xl denali fleet order guide, p.9.

  ⛭ GM factory document — 2027 gmc yukon xl fleet order guide, p.9.

This page aggregates every documented appearance of K1O in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.