C99 Factory-verified

Chevrolet · Regular Production Option

Switch, inflatable restraint, instrument panel module, manual suppression

Years 2003–10, 2014–19, 2022–27 Models 5 Factory citations 35

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Also described as Air bag deactivation switch, front passengerAirbag deactivation switch, frontal passenger side

Also documented for GMC Hummer Pontiac

Documented applications

Aveo — T200 (2004–2008)

2008 Factory-verified

the 2008 list reads passenger air bag, manual cut-off;

GM factory document — 2008 chevrolet aveo rpo code list, p.1.

Aveo — T250 (2009–2011)

2009 Factory-verified

GM factory document — 2009 chevrolet aveo rpo code list, p.1.

Express — GMT610 (2003–2027)

2003–2010, 2014–2018, 2022–2027 Factory-verified

the 2025–2027 guides read Airbag deactivation switch, frontal passenger-side; S: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2025–2026), Passenger 1LS, Passenger 1LT

GM factory document — 2003 chevrolet express rpo code list, p.1.
GM factory document — 2004 chevrolet express awd rpo code list, p.1.
GM factory document — 2005 chevrolet express awd rpo code list, p.1.
GM factory document — 2006 chevrolet express awd rpo code list, p.1.
GM factory document — 2007 chevrolet express awd rpo code list, p.1.
GM factory document — 2008 chevrolet express rpo code list, p.1.
GM factory document — 2009 chevrolet express rpo code list, p.1.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.14.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.6.
GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.11.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.5.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.5.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.15.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.13.
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.13.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.11.
GM factory document — 2025 chevrolet express cargo fleet order guide, p.1.
GM factory document — 2025 chevrolet express cutaway fleet order guide, p.1.
GM factory document — 2025 chevrolet express passenger fleet order guide, p.1.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.11.
GM factory document — 2026 chevrolet express cargo fleet order guide, p.1.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.1.
GM factory document — 2026 chevrolet express passenger fleet order guide, p.1.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.1.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.1.
GM factory document — 2027 chevrolet express passenger fleet order guide, p.1.

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.4.
GM factory document — 2018 chevrolet silverado 2500hd order guide copy gm authority, p.23.
GM factory document — 2019 chevrolet silverado 2500hd order guide april 20 2018 iteration 2 copy gm authority, p.48.

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.

This page aggregates every documented appearance of C99 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.