QHY ✓ Factory-verified

GMC · Regular Production Option

Tires, LT235/80R18, all-terrain, blackwall

Years 2025–27 Models 1 Factory citations 3

Query this via API →

Also documented for BuickChevroletHummer

Documented applications

Sierra HD — T1XX (2020–2027) →

• 2025–2027 ✓ Factory-verified

  only in: 3500 HD pickup and 3500 HD CC

  ⛭ GM factory document — 2025 gmc sierra 3500 hd retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 gmc sierra 3500 hd retail and fleet fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 gmc sierra 3500 hd retail and fleet fleet order guide rpo codes, p.1.

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