Upfitter switch kit

Years 1993, 2016–20, 2022–27 Models 7 Factory citations 31

Also described as Upfitter wiring provisions, includes two 30-amp relay controlled circuitsWiring junction block, equipment accessory, with two 30 amp circuitsRadio provisionUpfitter switches, 4

Also documented for GMC

Documented applications

BrightDrop (2022–2026)

2025–2026 Factory-verified

S;

GM factory document — 2025 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.4.
GM factory document — 2026 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.4.

Express — GMT610 (2003–2027)

2017–2018, 2022–2027 Factory-verified

O: Cargo CG33705 (2025–2027), Cargo CG23405, CG23705, CG33405 (2025), Cargo CG23705 (2027), Cutaway 1WT (2027), Cutaway 2WT (2025–2026), Cutaway CG33503 (2025–2026), Cutaway 1WT CG33803 (2025–2026); not offered: Cargo CG23405, CG33405 (2026–2027), Cargo CG23705 (2026), Cutaway 1WT CG33903 (2025–2026); in the 2025–2027 guides only in the Cargo and Cutaway guides

GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.3.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.14.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.12.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.13.
GM factory document — 2024 chevrolet 24 express savana body builder manual 18553161 2023oct26, p.12.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.10.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.23.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.33.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.10.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.25.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.35.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.23.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.16.

Chevy Van — Second generation G-series (1983–1996)

1993 Factory-verified

SEO; G31305 only; radio wiring and speakers with no radio.

GM Heritage factory kit — 1993 Chevrolet G Van, p.67.

Silverado HD — K2XX (2015–2019)

2016–2019 Factory-verified

2017: GM's 2017 Silverado 2500HD order guide; 2018: GM's 2018 Silverado 2500HD order guide; 2019: GM's 2019 Silverado 2500HD order guide

GM factory document — 2016 chevrolet silverado 2500hd fleet order guide wayback, p.2.
GM factory document — 2017 chevrolet silverado 2500hd order guide revised august 12 2016 copy gm authority, p.17.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.26.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.26.

Silverado HD (T1XX, 2020–2027)

2025–2027 Factory-verified

GM factory document — 2025 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.

Silverado Medium Duty (GM515, 2019–2026)

2025–2026 Factory-verified

GM factory document — 2025 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

Silverado — T1XX (2019–2026)

2020, 2022–2026 Factory-verified

the 2020 list prints "(5)" after the name;

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.9.
GM factory document — 2023 chevrolet 23 silverado 1500 electrical body builder sm en us 2022oct24, p.9.
GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.11.
GM factory document — 2025 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

This page aggregates every documented appearance of 9L7 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.