GVWR, 11,500 lbs (5216 kg), single rear wheels

Years 2016–19, 2025–27 Models 2 Factory citations 7

Query this via API →

Also described as GVWR, 11,500 lb (5,216 kg)

Also documented for GMC

Documented applications

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

only in: 3500HD; 2017: GM's 2017 Silverado 3500HD order guide; 2018: GM's 2018 Silverado 3500HD order guide; 2019: GM's 2019 Silverado 3500HD order guide

GM factory document — 2016 chevrolet silverado 3500hd fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet silverado 3500hd order guide revised august 12 2016 copy gm authority, p.24.
GM factory document — 2018 chevrolet silverado 3500hd order guide copy gm authority, p.37.
GM factory document — 2019 chevrolet silverado 3500hd order guide april 20 2018 copy gm authority, p.35.

Silverado HD (T1XX, 2020–2027)

2025–2027 Factory-verified

only in: 2500 HD, 3500 HD

GM factory document — 2025 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado 3500 hd retail and fleet fleet order guide rpo codes, p.1.

This page aggregates every documented appearance of G1Y in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.