LPO, Cross rails, tiered storage system

Years 2015–26 Models 3 Factory citations 13

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Also described as LPO, cross rails tiered storage systemLPO, tiered storage

Also documented for GMC

Documented applications

Colorado — Second generation (GMT31XX) (2015–2022)

2015–2019, 2021–2022 Factory-verified

2015: WT, LT, Z71: O; Base: not offered; 2017: WT, LT, Z71: O; Base: not offered; 2018 from GM's 2018 Colorado order guide (PDF); 2021 from the upfitter list GM files for 2021 and 2022

GM factory document — 2015 chevrolet colorado fleet order guide wayback, p.3.
GM factory document — 2016 chevrolet canyon colorado electrical body builders manual service manual 2016 en us, p.13.
GM factory document — 2017 chevrolet colorado fleet order guide wayback, p.2.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.12.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.12.
GM factory document — 2018 chevrolet colorado order guide copy gm authority, p.29.

Silverado HD — K2XX (2015–2019)

2018 Factory-verified

dealer-installed; 2018: GM's 2018 Silverado 2500HD order guide

GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.66.

Silverado — T1XX (2019–2026)

2020, 2022–2026 Factory-verified

GM factory document — 2020 chevrolet silverado 1500 fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet 22 silverado 1500 new electrical body builder 042822, p.13.
GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.14.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.17.
GM factory document — 2025 chevrolet my25 silverado 1500 electrical bbm, p.14.
GM factory document — 2026 chevrolet silverado 1500 electrical body builder manual service manual 2026 en us, p.10.

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