L4B ✓ Factory-verified

Chevrolet · Regular Production Option

Engine, 2.7L TurboMax

Years 2027 Models 2 Factory citations 3

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Also described as Engine, TurboMax

Also documented for GMC

Documented applications

Colorado — Third generation (2023–2027) →

• 2027 ✓ Factory-verified

  S on all trims; the 2025 and 2026 lists use L3B for the TurboMax engine

  ⛭ GM factory document — 2027 chevrolet colorado fleet order guide, p.54.

Silverado 1500 — Fifth generation (2027) →

• 2027 ✓ Factory-verified

  350 hp at 5200 rpm, 455 lb-ft at 3000 rpm

  ⛭ GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide, p.33.

Related codes · mentioned in these notes

L3B

This page aggregates every documented appearance of L4B in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.