9B4 ✓ Factory-verified

Chevrolet · Regular Production Option

Fuel fill cap, with stainless steel tether

Years 2001–02, 2023, 2025–27 Models 2 Factory citations 6

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Also described as Cap, fuel fill, with stainless tether

Also documented for GMC

Documented applications

Express — GMT600 (1996–2002) →

• 2001–2002 ✓ Factory-verified
  ⛭ GM factory document — 2001 chevrolet express rpo code list, p.1.

  ⛭ GM factory document — 2002 chevrolet express rpo code list, p.1.

Express — GMT610 (2003–2027) →

• 2023, 2025–2027 ✓ Factory-verified

  O: Cutaway 1WT, Cutaway 2WT (2025–2026); in the 2025–2027 guides only in the Cutaway guides

  ⛭ GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.12.

  ⛭ GM factory document — 2025 chevrolet express cutaway fleet order guide, p.54.

  ⛭ GM factory document — 2026 chevrolet express cutaway fleet order guide, p.56.

  ⛭ GM factory document — 2027 chevrolet express cutaway fleet order guide, p.28.

Related codes · mentioned in these notes

1WT2WT

This page aggregates every documented appearance of 9B4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.