U05 ✓ Factory-verified

Cadillac · Regular Production Option

Horn, dual note tone

Years 2025–26 Models 3 Factory citations 9

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Also described as Horns, dual

Also documented for BuickChevroletGMCPontiacSaturn

Documented applications

Escalade — T1XX, 5th gen (2021–2027) →

• 2026 ✓ Factory-verified
  ⛭ GM factory document — 2026 cadillac escalade escalade esv electrical body builder manual service manual 2026 en us, p.8.

XT5 — C1XX (2017–2026) →

• 2025–2026 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 cadillac xt5 professional vehicles fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide, p.3.

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide, p.21.

  ⛭ GM factory document — 2026 cadillac xt5 fleet order guide, p.3.

  ⛭ GM factory document — 2026 cadillac xt5 fleet order guide, p.22.

XT6 — C1XX (2020–2025) →

• 2025 ✓ Factory-verified

  All trims: S

  ⛭ GM factory document — 2025 cadillac xt6 fleet order guide, p.3.

  ⛭ GM factory document — 2025 cadillac xt6 fleet order guide, p.65.

Related codes · mentioned in these notes

S

This page aggregates every documented appearance of U05 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.