ZM1 ✓ Factory-verified

GMC · Regular Production Option

Enhanced Trailering Technology Package

Years 2022–23, 2025–27 Models 2 Factory citations 10

Query this via API →

Also documented for CadillacChevrolet

Documented applications

Yukon — T1XX (2021–2027) →

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

  2027: AT4 Ultimate, Denali Ultimate: S; AT4, Denali: O; includes TRG, THS

  ⛭ GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.14.

  ⛭ GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.14.

  ⛭ GM factory document — 2025 gmc new yukon denali fleet order guide, p.38.

  ⛭ GM factory document — 2026 gmc yukon denali fleet order guide, p.81.

  ⛭ GM factory document — 2027 gmc yukon fleet order guide, p.18.

Yukon XL — T1XX (2021–2027) →

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

  2027: AT4 Ultimate, Denali Ultimate: S; AT4, Denali: O; includes TRG, THS

  ⛭ GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.14.

  ⛭ GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.14.

  ⛭ GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.41.

  ⛭ GM factory document — 2026 gmc yukon xl denali fleet order guide, p.81.

  ⛭ GM factory document — 2027 gmc yukon xl fleet order guide, p.18.

Related codes · mentioned in these notes

THSTRG

This page aggregates every documented appearance of ZM1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.