LPO, trailering equipment package, Class II 1-1/4 inch receiver hitch, 4-wire connection

Years 2015–19, 2022–26 Models 3 Factory citations 14

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Also described as LPO, trailer hitch, fixedLPO, Accessory carrier mount, 1-1/4 inch receiver for bike and ski carriers

Also documented for Buick GMC

Documented applications

Equinox — Second generation (2010–2017)

2015 Factory-verified

LS, 1LT, 2LT, LTZ: dealer-installed or available

GM factory document — 2015 chevrolet equinox fleet order guide wayback, p.4.
2017 Factory-verified

LS, LT, Premier: dealer-installed or available

GM factory document — 2017 chevrolet equinox order guide copy gm authority, p.26.

Express — GMT610 (2003–2027)

2015–2018, 2022–2026 Factory-verified

GM's list calls it an accessory

GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.15.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.10.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.10.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.16.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.14.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.15.
GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.14.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.12.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.

Trax — first US generation (2015–2022)

2016, 2018–2019 Factory-verified

all trims: O; not for towing

GM factory document — 2016 chevrolet trax fleet order guide wayback, p.3.
GM factory document — 2018 chevrolet trax order guide copy gm authority, p.9.
GM factory document — 2019 chevrolet trax order guide copy gm authority, p.9.

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