SWA ✓ Factory-verified

Chevrolet · Regular Production Option

Ship through, produced at Springfield Assembly and shipped to M.H. Eby, West Jefferson, OH, and returned to Springfield Assembly for shipment to final destination

Years 2025–26 Models 2 Factory citations 4

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Also described as Ship thru, produced at Springfield Assembly and shipped to M.H. Eby, West Jefferson, OH, and returned to Springfield Assembly for shipment to final destination

Also documented for GMC

Documented applications

Express — GMT610 (2003–2027) →

• 2025–2026 ✓ Factory-verified internal

  ; only in: Cutaway; O on all trims

  ⛭ GM factory document — 2025 chevrolet express cutaway fleet order guide, p.57.

  ⛭ GM factory document — 2026 chevrolet express cutaway fleet order guide, p.57.

Silverado Medium Duty (GM515, 2019–2026) →

• 2025–2026 ✓ Factory-verified internal
  ⛭ 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 SWA in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.