L3B ✓ Factory-verified

Chevrolet · Regular Production Option

Engine, gas, 4 cylinder, L4, 2.7L, SIDI, VVT, turbo, DOHC, aluminum, TurboMax

Years 2020, 2022–26 Models 2 Factory citations 10

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Also described as Engine, 2.7L turbo

Also documented for CadillacGMC

Documented applications

Colorado — Third generation (2023–2027) →

• 2023–2026 ✓ Factory-verified

  the 2027 list uses L4B for the TurboMax engine; 2025–2026: S on all trims

  ⛭ GM factory document — 2023 chevrolet 23colorado electrical body builder, p.11.

  ⛭ GM factory document — 2024 chevrolet 24colorado electrical body builder manual 18272478 2023oct09, p.12.

  ⛭ GM factory document — 2025 chevrolet colorado fleet order guide, p.49.

  ⛭ GM factory document — 2026 chevrolet colorado fleet order guide, p.55.

Silverado — T1XX (2019–2026) →

• 2020, 2022–2026 ✓ Factory-verified

  TurboMax is the name in the 2025–2026 lists ("Engine, TurboMax"); the 2020 list reads "Engine, 2.7L Turbo"; NICB 2025 and 2026 print L3B as a 2.7L turbo four-cylinder;

  ⛭ 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.12.

  ⛭ GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.12.

  ⛭ GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.14.

  ⛭ 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.

Related codes · mentioned in these notes

L4B

This page aggregates every documented appearance of L3B in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.