NB8 Factory-verified

Cadillac · Regular Production Option

Emissions override, California

Years 2014–19, 2025–27 Models 16 Factory citations 41

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Also described as Emission override, CaliforniaEmissions override, California dealer ordering federal emissions

Also documented for Buick Chevrolet GMC Oldsmobile Pontiac Saturn

Documented applications

ATS — Alpha (2013–2019)

2014–2015, 2018 Factory-verified internal

; lets a dealer in a California-emissions state order federal emissions for a car registered in a federal state

GM factory document — 2014 cadillac ats fleet order guide wayback, p.10.
GM factory document — 2015 cadillac ats coupe fleet order guide wayback, p.4.
GM factory document — 2018 cadillac ats coupe fleet order guide wayback, p.4.
GM factory document — 2018 cadillac ats sedan fleet order guide wayback, p.4.
GM factory document — 2018 cadillac ats v fleet order guide wayback, p.4.

CT4 — Alpha 2 (2020–2026)

2025–2026 Factory-verified internal

all trims: O

GM factory document — 2025 cadillac ct4 fleet order guide, p.15.
GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.16.
GM factory document — 2026 cadillac ct4 fleet order guide, p.14.
GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.15.

CT5 — Alpha 2 (2020–2026)

2025–2026 Factory-verified internal

GM factory document — 2025 cadillac ct5 fleet order guide rpo codes, p.1.
GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct5 fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.

CT6 — Omega (2016–2020)

2017–2019 Factory-verified internal

; all trims: O; lets a dealer in a California-emissions state order federal emissions for a car registered in a federal state; requires FE9; 2018 and 2019 from the 2018 and 2019 CT6 order guides (GM documents)

GM factory document — 2017 cadillac ct6 fleet order guide wayback, p.4.
GM factory document — 2018 cadillac ct6 order guide copy gm authority, p.57, p.60.
GM factory document — 2019 cadillac ct6 order guide copy gm authority, p.52, p.54.

CTS — Alpha (2014–2019)

2014–2015, 2018 Factory-verified internal

requires FE9; lets a dealer in a California-emissions state order Federal emissions

GM factory document — 2014 cadillac cts sedan fleet order guide wayback, p.4.
GM factory document — 2015 cadillac cts sedan fleet order guide wayback, p.4.
GM factory document — 2018 cadillac cts sedan fleet order guide wayback, p.4.

CTS — Sigma II (2008–2015)

2014 Factory-verified internal

requires FE9; lets a dealer in a California-emissions state order Federal emissions

GM factory document — 2014 cadillac cts coupe and cts v coupe fleet order guide wayback, p.3.
GM factory document — 2014 cadillac cts v sedan fleet order guide wayback, p.4.

Escalade IQ — Ultium BEV (2025–2027)

2025–2027 Factory-verified internal

GM factory document — 2025 cadillac all electric escalade iq fleet order guide rpo codes, p.1.
GM factory document — 2027 cadillac all electric escalade iql fleet order guide rpo codes, p.1.

Escalade — K2XX (2015–2020)

2015 Factory-verified internal

; requires FE9

GM factory document — 2015 cadillac escalade fleet order guide wayback, p.4.

Escalade — T1XX, 5th gen (2021–2027)

2025–2027 Factory-verified internal

GM factory document — 2025 cadillac new escalade escalade v fleet order guide, p.17.
GM factory document — 2027 cadillac escalade escalade v fleet order guide, p.19.

Lyriq — BEV3 (2023–2027)

2025, 2027 Factory-verified internal

GM factory document — 2025 cadillac all electric lyriq fleet order guide rpo codes, p.1.
GM factory document — 2027 cadillac all electric lyriq professional vehicle fleet order guide rpo codes, p.1.

Optiq — BEV3 (2025–2027)

2025, 2027 Factory-verified internal

GM factory document — 2025 cadillac all electric optiq fleet order guide rpo codes, p.1.
GM factory document — 2027 cadillac all electric optiq optiq v fleet order guide rpo codes, p.1.

SRX — Theta Premium / GMT166 (2010–2016)

2016 Confirmed internal

; lets a dealer in a California-emissions state order federal emissions for a vehicle registered in a federal state; requires FE9; not available in Maine or Vermont; GM's 2016 SRX order guide (GM Authority's copy, published September 18, 2015)

Vistiq — BEV3 (2026–2027)

2027 Factory-verified internal

GM factory document — 2027 cadillac all electric vistiq fleet order guide, p.55.

XT4 — E2 (2019–2025)

2025 Factory-verified internal

Premium Luxury, Sport: O; lets a dealer in a California-emissions state order Federal emissions; requires FE9

GM factory document — 2025 cadillac xt4 fleet order guide, p.12.
GM factory document — 2025 cadillac xt4 fleet order guide rpo codes, p.1.

XT5 — C1XX (2017–2026)

2025–2026 Factory-verified internal

; all trims: O

GM factory document — 2025 cadillac xt5 fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac xt5 professional vehicles fleet order guide rpo codes, p.1.
GM factory document — 2025 cadillac xt5 fleet order guide, p.16.
GM factory document — 2025 cadillac xt5 fleet order guide, p.34.
GM factory document — 2026 cadillac xt5 fleet order guide, p.16.
GM factory document — 2026 cadillac xt5 fleet order guide, p.35.

XT6 — C1XX (2020–2025)

2025 Factory-verified internal

; All trims: O

GM factory document — 2025 cadillac xt6 fleet order guide, p.17.
GM factory document — 2025 cadillac xt6 fleet order guide, p.63.

This page aggregates every documented appearance of NB8 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.