Exhaust, dual-mode

Years 2008–09, 2013–27 Models 8 Factory citations 23

Also described as Exhaust, dual-mode, performanceExhaust system, performanceExhaust, dual-mode performanceExhaust, performanceExhaust, active, dual system, quad tips, sport mode enabledActive exhaust, dual, sport-mode enabled

Also documented for GMC

Documented applications

Camaro — Gen 5 Zeta (2010–2015)

2013–2014 Confirmed

SS with manual transmission, new for 2013 (GM Authority 2013 RPO changes); GM Authority 2014 RPO list

Camaro — Gen 6 Alpha (2016–2024)

2016, 2019, 2023 Factory-verified

the 2016 list reads "dual-mode, performance"; 2023 list: requires LGX;

GM factory document — 2016 chevrolet camaro fleet order guide wayback, p.1.
GM factory document — 2019 chevrolet camaro fleet order guide wayback, p.7.
GM factory document — 2023 chevrolet camaro fleet order guide wayback, p.4.

Corvette — C6 (2005–2013)

2008–2009 Factory-verified

GM factory document — 2008 chevrolet corvette rpo code list, p.1.
GM factory document — 2009 chevrolet corvette rpo code list, p.1.

Corvette — C7 (2014–2019)

2014–2019 Factory-verified

Stingray without Z51: O; standard with Z51 (from 2015), Grand Sport, Z06 and ZR1; 2016, 2019: from GM order-guide copies (Corvette Action Center; 2019 also GM Authority)

GM factory document — 2014 chevrolet corvette stingray fleet order guide wayback, p.1.
GM factory document — 2015 chevrolet corvette fleet order guide wayback, p.4.
GM factory document — 2017 chevrolet corvette fleet order guide wayback, p.1.
GM factory document — 2018 chevrolet corvette fleet order guide wayback, p.5.

Corvette — C8 (2020–2027)

2020–2027 Factory-verified

GM factory document — 2020 chevrolet corvette stingray order guide copy corvetteblogger, p.40.
GM factory document — 2021 chevrolet corvette fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet corvette stingray order guide copy corvetteblogger, p.52.
GM factory document — 2023 chevrolet corvette stingray z06 order guide copy corvetteblogger, p.95.
GM factory document — 2024 chevrolet corvette stingray z06 e ray order guide copy corvetteblogger, p.151.
GM factory document — 2025 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet corvette fleet order guide rpo codes, p.1.

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified

GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide, p.157.

Silverado — T1XX (2019–2026)

2024–2026 Factory-verified

GM factory document — 2024 chevrolet 24 silverado1500 electrical body builder 2023nov29, p.15.
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.

SS — single generation (2014–2017)

2016 Factory-verified

S; printed as new for 2016; GM Authority 2016 SS changes

GM factory document — 2016 chevrolet ss fleet order guide wayback, p.4.

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