LPO, all-weather floor liners

Years 2023–27 Models 2 Factory citations 11

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Also described as LPO, AEV brand floor liners

Also documented for Chevrolet

Documented applications

Sierra HD — T1XX (2020–2027)

2024–2027 Factory-verified

only in: 2500 HD; 2024: GM Authority 2024 changes page; AT4X: O; Pro, SLE, SLT, AT4, Denali, Denali Ultimate: not offered

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.62.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.58.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.57.

Sierra — T1XX (2019–2026)

2023–2026 Factory-verified

the upfitter lists read "Accessory, floor liner, contoured, alternate design 2"

GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.9.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.11.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.9.
GM factory document — 2025 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

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