UJN ✓ Factory-verified

Chevrolet · Regular Production Option

Tire pressure monitoring system

Years 2022–27 Models 9 Factory citations 36

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Also described as Tire pressure monitor system, auto learnTire pressure monitor system, auto learn, includes Tire Fill Alert and Tire Leak DetectionTire pressure monitoring system, with auto learnTire pressure monitoringTire Pressure Monitor System, auto learn

Also documented for BuickCadillacGMC

Documented applications

Blazer EV (2024–2027) →

• 2025 ✓ Factory-verified
  ⛭ GM factory document — 2025 chevrolet blazer ev fleet order guide rpo codes, p.1.

BrightDrop (2022–2026) →

• 2025–2026 ✓ Factory-verified

  S; does not apply to the spare tire;

  ⛭ GM factory document — 2025 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.4.

  ⛭ GM factory document — 2026 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.4.

Colorado — Third generation (2023–2027) →

• 2023–2027 ✓ Factory-verified

  S on all trims

  ⛭ 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.33.

  ⛭ GM factory document — 2026 chevrolet colorado fleet order guide, p.37.

  ⛭ GM factory document — 2027 chevrolet colorado fleet order guide, p.37.

Silverado EV — BT1 (2024–2027) →

• 2024–2027 ✓ Factory-verified
  ⛭ GM factory document — 2024 chevrolet silverado ev fleet fleet order guide wayback, p.1.

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

  ⛭ GM factory document — 2025 chevrolet silverado ev fleet order guide, p.8.

  ⛭ GM factory document — 2026 chevrolet silverado ev fleet order guide, p.11.

  ⛭ GM factory document — 2027 chevrolet silverado ev fleet order guide, p.10.

Silverado HD (T1XX, 2020–2027) →

• 2025–2027 ✓ Factory-verified

  only in: 2500 HD, 3500 HD

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

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

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

Silverado — T1XX (2019–2026) →

• 2023–2026 ✓ Factory-verified
  ⛭ GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.15.

  ⛭ GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.17.

  ⛭ GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Suburban — T1XX (2021–2027) →

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

  2027: S on all trims

  ⛭ GM factory document — 2025 chevrolet new suburban fleet order guide, p.5.

  ⛭ GM factory document — 2026 chevrolet suburban fleet order guide, p.5.

  ⛭ GM factory document — 2027 chevrolet suburban fleet order guide, p.5.

  ⛭ GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.13.

  ⛭ GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.13.

  ⛭ GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.9.

Tahoe — T1XX (2021–2027) →

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

  2027: S on all trims

  ⛭ GM factory document — 2025 chevrolet new tahoe retail and fleet fleet order guide, p.5.

  ⛭ GM factory document — 2026 chevrolet tahoe retail and fleet fleet order guide, p.5.

  ⛭ GM factory document — 2027 chevrolet tahoe retail and fleet fleet order guide, p.5.

  ⛭ GM factory document — 2027 chevrolet tahoe police package and special service fleet order guide, p.4.

  ⛭ GM factory document — 2022 chevrolet 22 suburban tahoe electrical body builder sm u 2021oct08, p.13.

  ⛭ GM factory document — 2023 chevrolet 23 suburban tahoe electrical body builder sm en us 2022sep13, p.13.

  ⛭ GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.9.

Traverse — Third generation (2024–2027) →

• 2025–2027 ✓ Factory-verified

  S on all trims

  ⛭ GM factory document — 2025 chevrolet traverse fleet order guide, p.6.

  ⛭ GM factory document — 2026 chevrolet traverse fleet order guide, p.6.

  ⛭ GM factory document — 2027 chevrolet traverse fleet order guide, p.7.
• 2024 ◑ Single-source

  decoderpo.com's 2024 ALL-NEW Traverse order guide page lists it on its Standart Equipment tab (LS, LT, Z71); the page is a T3 mirror of GM's guide and the repository holds no GM document for 2024

Related codes · mentioned in these notes

Z71

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