GZJ ✓ Factory-verified

Chevrolet · Regular Production Option

GVWR, 18,000 lb (8,165 kg)

Years 1996, 2025–26 Models 2 Factory citations 3

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Also described as GVW rating, 18,000 lb

Documented applications

Motor Home chassis (1983–1998) →

• 1996 ✓ Factory-verified

  only in: 72 and 92 models

  ⛭ GM Heritage factory kit — 1996 Chevrolet Motorhome, p.13.

Silverado Medium Duty (GM515, 2019–2026) →

• 2025–2026 ✓ Factory-verified
  ⛭ GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

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