NC1 Factory-verified

Chevrolet · Regular Production Option

Emission system, California, LEV

Years 1998–08 Models 27 Factory citations 112

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Also described as Emission system, California LEVEmission system, CaliforniaEmissions, California LEV

Also documented for Buick Cadillac GMC Hummer Oldsmobile Pontiac Saturn

Documented applications

Astro — Second generation (1995–2005)

1998–2001 Factory-verified internal

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

Avalanche — GMT800 (2002–2006)

2002–2006 Factory-verified internal

GM factory document — 2002 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet avalanche 2wd rpo code list, p.1.

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

1999–2004 Factory-verified internal

GM factory document — 1999 chevrolet blazer 4wd rpo code list, p.1.
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.
GM factory document — 2003 chevrolet blazer 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet blazer 4wd rpo code list, p.1.

Camaro — Gen 4 (1993–2002)

2001 Factory-verified internal

GM factory document — 2001 chevrolet camaro rpo code list, p.1.

Cavalier — third generation (1995–2005)

2003–2004 Factory-verified internal

GM factory document — 2003 chevrolet cavalier rpo code list, p.1.
GM factory document — 2004 chevrolet cavalier rpo code list, p.1.
GM Heritage factory kit — 2003 Chevrolet Cavalier, p.19.

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.

Corvette — C5 (1997–2004)

2001–2004 Factory-verified internal

GM factory document — 2001 chevrolet corvette rpo code list, p.1.
GM factory document — 2002 chevrolet corvette rpo code list, p.1.
GM factory document — 2003 chevrolet corvette rpo code list, p.1.
GM factory document — 2004 chevrolet corvette rpo code list, p.1.

Express — GMT600 (1996–2002)

1998–2002 Factory-verified internal

the 1998–2000 lists print "Federal, Tier 1", the wording of NF2 (a misprint)

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.

Express — GMT610 (2003–2027)

2003–2006 Factory-verified internal

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 rpo code list, p.1.

Impala — eighth generation (2000–2005)

2000–2002 Factory-verified internal

GM factory document — 2000 chevrolet impala rpo code list, p.1.
GM factory document — 2001 chevrolet impala rpo code list, p.1.
GM factory document — 2002 chevrolet impala rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Impala, p.43.
GM Heritage factory kit — 2001 Chevrolet Impala, p.34.

Lumina — second generation (1995–2001)

2000–2001 Factory-verified internal

GM factory document — 2000 chevrolet lumina rpo code list, p.1.
GM factory document — 2001 chevrolet lumina rpo code list, p.1.

Malibu — Fifth generation (1997–2005)

2001–2005 Factory-verified internal

GM factory document — 2001 chevrolet malibu rpo code list, p.1.
GM factory document — 2002 chevrolet malibu rpo code list, p.1.
GM factory document — 2003 chevrolet malibu rpo code list, p.1.
GM factory document — 2004 chevrolet classic rpo code list, p.1.
GM factory document — 2005 chevrolet classic rpo code list, p.1.

Metro — second generation (1998–2001)

1999–2001 Factory-verified internal

list prints Emisssion

GM factory document — 1999 chevrolet metro rpo code list, p.1.
GM factory document — 2000 chevrolet metro rpo code list, p.1.
GM factory document — 2001 chevrolet metro rpo code list, p.1.

Monte Carlo — sixth generation (2000–2007)

2000–2002 Factory-verified internal

GM factory document — 2000 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2001 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2002 chevrolet monte carlo rpo code list, p.1.

Prizm — third generation (1998–2002)

2000–2002 Factory-verified internal

GM factory document — 2000 chevrolet prizm rpo code list, p.1.
GM factory document — 2001 chevrolet prizm rpo code list, p.1.
GM factory document — 2002 chevrolet prizm rpo code list, p.1.

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

1999–2004 Factory-verified internal

GM factory document — 1999 chevrolet s10 pickup 4wd rpo code list, p.1.
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.
GM factory document — 2003 chevrolet s10 pickup 4wd rpo code list, p.1.
GM factory document — 2004 chevrolet s10 pickup 4wd rpo code list, p.1.

Silverado — GMT800 (1999–2007)

1999–2000, 2002–2007 Factory-verified internal

GM factory document — 1999 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Truck and Silverado, p.57.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.60.

Silverado HD — GMT800 (2001–2007)

2002–2007 Factory-verified internal

GM factory document — 2002 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet chevy c silverado 2wd rpo code list, p.1.
GM factory document — 2007 chevrolet silverado classic 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014)

2007–2008 Factory-verified internal

the lists label it not for use after the 2007 model year on light-duty trucks; the label covers light duty only and the 2008 heavy-duty half still prints it

GM factory document — 2007 chevrolet silverado 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet silverado 2wd rpo code list, p.1.

SSR (2003–2006)

2003–2006 Factory-verified internal

the 2005 and 2006 lists add a remark not to use it after the 2007 model year for domestic passenger cars and light-duty trucks

GM factory document — 2003 chevrolet ssr rpo code list, p.1.
GM factory document — 2004 chevrolet ssr rpo code list, p.1.
GM factory document — 2005 chevrolet ssr rpo code list, p.1.
GM factory document — 2006 chevrolet ssr rpo code list, p.1.

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, 2002–2006 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 factory document — 2003 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet chevy suburban 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Suburban, p.47.
GM Heritage factory kit — 2003 Chevrolet Suburban, p.39.

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, 2002–2006 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 factory document — 2003 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2006 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.
GM Heritage factory kit — 2003 Chevrolet Tahoe, p.32.

Tracker — Second generation (1999–2004)

1999–2004 Factory-verified internal

GM factory document — 1999 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2000 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet tracker 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet tracker 2wd rpo code list, p.1.

TrailBlazer — GMT360 (2002–2009)

2002–2004 Factory-verified internal

GM Heritage factory kit — 2002 Chevrolet Trailblazer, p.28.
GM factory document — 2002 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet trailblazer 2wd rpo code list, p.1.

Venture — U-body minivan (1997–2005)

2000, 2003 Factory-verified internal

GM factory document — 2000 chevrolet venture ext rpo code list, p.1.
GM factory document — 2003 chevrolet venture ext rpo code list, p.1.

This page aggregates every documented appearance of NC1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.