G4H ✓ Factory-verified

Chevrolet · Regular Production Option

GVWR, 11,900 lb (5,398 kg)

Years 2025–27 Models 1 Factory citations 3

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Also documented for GMC

Documented applications

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.

This page aggregates every documented appearance of G4H in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.