Ship through, for orders with CGN, produced in Ft. Wayne Assembly, shipped to Reading Truck Equipment, Pontiac, MI, returned to Flint Assembly for shipping to final destination

Years 2005–07, 2020, 2025–27 Models 3 Factory citations 7

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Also described as Ship-through to Masterack Truck EquipmentShip thru, Reading Truck Equipment, Pontiac, MI

Also documented for GMC

Documented applications

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified internal

GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Silverado — GMT800 (1999–2007)

2005–2007 Factory-verified internal

1500 models built at Pontiac in the 2005 order guide

GM Heritage factory kit — 2005 Chevrolet Silverado 1500, p.200.
GM Heritage factory kit — 2006 Chevrolet Silverado, p.271.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.267.

Silverado — T1XX (2019–2026)

2020, 2025–2026 Factory-verified internal

for orders with CGN spray-on bedliner; built at Ft. Wayne Assembly; returned to Flint Assembly for final shipping;

GM factory document — 2020 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

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