C5B ✓ Factory-verified

Chevrolet · Regular Production Option

GVWR, 15,000 lb (6,804 kg)

Years 1998–00, 2025–26 Models 2 Factory citations 5

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Also described as GVW rating, 15000 lbs

Also documented for CadillacGMC

Documented applications

C/K pickup — GMT400 (1988–2000) →

• 1998–2000 ✓ Factory-verified
  ⛭ GM factory document — 1998 chevrolet chevy c pickup 2wd rpo code list, p.1.

  ⛭ GM factory document — 1999 chevrolet chevy c pickup 2wd rpo code list, p.1.

  ⛭ GM factory document — 2000 chevrolet chevy c pickup 2wd rpo code list, p.1.

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 C5B in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.