U1D ✓ Factory-verified

Chevrolet · Regular Production Option

Advanced trailering system

Years 2020, 2022–27 Models 2 Factory citations 7

Query this via API →

Also described as Trailering app

Also documented for GMC

Documented applications

Colorado — Third generation (2023–2027) →

• 2023–2027 ✓ Factory-verified

  Trail Boss, Z71, ZR2: S; WT, LT: O

  ⛭ GM factory document — 2023 chevrolet 23colorado electrical body builder, p.13.

  ⛭ GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.14.

  ⛭ GM factory document — 2025 chevrolet colorado fleet order guide, p.48.

  ⛭ GM factory document — 2026 chevrolet colorado fleet order guide, p.54.

  ⛭ GM factory document — 2027 chevrolet colorado fleet order guide, p.53.

Silverado — T1XX (2019–2026) →

• 2020, 2022 ✓ Factory-verified
  ⛭ GM factory document — 2020 chevrolet silverado 1500 fleet order guide wayback, p.1.

  ⛭ GM factory document — 2022 chevrolet 22 silverado 1500 new electrical body builder 042822, p.14.

Related codes · mentioned in these notes

Z71ZR2

This page aggregates every documented appearance of U1D in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.