NN8 Factory-verified

Chevrolet · Regular Production Option

Emission override, unleaded fuel, export

Years 1998–04 Models 12 Factory citations 34

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Also described as Emission system, override unleaded fuel, exportEmissions override, unleaded fuel, export

Also documented for Cadillac GMC Oldsmobile

Documented applications

Astro — Second generation (1995–2005)

1999–2001, 2004 Factory-verified internal

2004 list reads "Emission Override Unleaded Fuel, Export".

GM factory document — 1999 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet astro 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet astro 2wd rpo code list, p.1.

Avalanche — GMT800 (2002–2006)

2002 Factory-verified internal

GM factory document — 2002 chevrolet avalanche 2wd rpo code list, p.1.

Blazer — S-10 second generation (1995–2005)

2000–2002 Factory-verified internal

GM factory document — 2000 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet blazer 4wd rpo code list, p.1.

C/K pickup — GMT400 (1988–2000)

1998–2000 Factory-verified internal

GM factory document — 1998 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy c pickup 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet chevy c pickup 2wd rpo code list, p.1.

Express — GMT600 (1996–2002)

1998–2002 Factory-verified internal

GM factory document — 1998 chevrolet express rpo code list, p.1.
GM factory document — 1999 chevrolet express rpo code list, p.1.
GM factory document — 2000 chevrolet express rpo code list, p.1.
GM factory document — 2001 chevrolet express rpo code list, p.1.
GM factory document — 2002 chevrolet express rpo code list, p.1.

S-10 pickup — Second generation (1994–2004)

2000–2002 Factory-verified internal

GM factory document — 2000 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2001 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2002 chevrolet s10 pickup 4wd rpo code list, p.1.

Silverado — GMT800 (1999–2007)

1999–2000 Factory-verified internal

GM factory document — 1999 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Truck and Silverado, p.57.

Suburban — GMT400 (1992–1999)

1998–1999 Factory-verified internal

GM factory document — 1998 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet chevy suburban 2wd rpo code list, p.1.

Suburban — GMT800 (2000–2006)

2000, 2002 Factory-verified internal

GM factory document — 2000 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy suburban 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Suburban, p.47.

Tahoe — GMT400 (1995–1999)

1998–1999 Factory-verified internal

GM factory document — 1998 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 1999 chevrolet tahoe 2wd rpo code list, p.1.

Tahoe — GMT800 (2000–2006)

2000, 2002 Factory-verified internal

GM factory document — 2000 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Tahoe, p.47.
GM Heritage factory kit — 2002 Chevrolet Tahoe, p.30.

TrailBlazer — GMT360 (2002–2009)

2003 Factory-verified internal

GM factory document — 2003 chevrolet trailblazer 2wd rpo code list, p.1.

This page aggregates every documented appearance of NN8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.