LPO, illumination package

Years 2025–27 Models 4 Factory citations 11

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Also described as LPO, Denali illumination packageLPO, Denali Illumination Package

Also documented for Chevrolet

Documented applications

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

only in: 2500 HD and 3500 HD pickup; includes LPO illuminated front GMC emblem (RN2), Denali illuminated door sills (S0M) and illuminated puddle lamp emblem (S3I); dealer-installed

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.

Sierra — T1XX (2019–2026)

2025–2026 Factory-verified

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.

Yukon — T1XX (2021–2027)

2025–2027 Factory-verified

2027: O on all trims; includes S3I, S0M, 5RU

GM factory document — 2025 gmc new yukon denali fleet order guide, p.31.
GM factory document — 2026 gmc yukon denali fleet order guide, p.33.
GM factory document — 2027 gmc yukon fleet order guide, p.29.

Yukon XL — T1XX (2021–2027)

2025–2027 Factory-verified

2027: O on all trims; includes S3I, S0M, 5RU

GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.32.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.33.
GM factory document — 2027 gmc yukon xl fleet order guide, p.29.

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