S6L Factory-verified

GMC · Regular Production Option

LPO, rocker protectors with assist steps

Years 2016, 2018–20, 2022–27 Models 7 Factory citations 25

Query this via API →

Also described as LPO, rocker panel protectorLPO, sport step, blackLPO, Assist step, accessoryLPO, Sport Step, Black

Also documented for Chevrolet

Documented applications

Canyon — Third generation (VSS-T) (2023–2027)

2023–2027 Factory-verified

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.12.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.13.
GM factory document — 2025 gmc canyon fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc canyon fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc canyon fleet order guide rpo codes, p.1.

Hummer EV Pickup (2022–2027)

2024–2026 Factory-verified

2024: GM Authority 2024 changes page

GM factory document — 2025 gmc hummer ev pickup fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.

Hummer EV SUV — BT1 (2024–2027)

2025–2026 Factory-verified

included in and available only with the Extreme Off-Road Package (Z6X). 2025: O in 1SF, 1SG; 2026: O in 1SF, 1SG; not offered in 3VL.

GM factory document — 2025 gmc hummer ev suv fleet order guide, p.20.
GM factory document — 2026 gmc hummer ev suv fleet order guide, p.24.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

Pro, Elevation, Denali, Denali Ultimate: not offered; AT4, AT4X: O (ADI available); dealer-installed

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.45.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

only in: 2500 HD and 3500 HD pickup

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 — K2XX (2014–2019)

2016, 2018–2019 Factory-verified

new for 2016; the 2017 manual prints S6L as a rocker panel protector, another reading, so 2017 is not claimed.

GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.3.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.90.
GM factory document — 2019 gmc sierra 1500 limited double cab k2xx order guide copy gm authority, p.41.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

the upfitter lists read "Accessory, protector, rocker panel"; the Silverado T1XX doc reads "LPO, Off-road assist steps"

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.13.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.14.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.13.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.13.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.15.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.13.
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 S6L in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.