NU1 Factory-verified

Chevrolet · Regular Production Option

Emission system, California, LEV2

Years 2004–10 Models 17 Factory citations 58

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Also described as Emission system, California, Level 2

Also documented for Buick Cadillac GMC Oldsmobile Pontiac Saturn

Documented applications

Avalanche — GMT900 (2007–2013)

2007–2009 Factory-verified internal

GM factory document — 2007 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet avalanche 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet avalanche 2wd rpo code list, p.1.
GM Heritage factory kit — 2007 Chevrolet Avalanche, p.30.

Cobalt — Delta (2005–2010)

2005–2009 Factory-verified internal

GM factory document — 2005 chevrolet cobalt rpo code list, p.1.
GM factory document — 2006 chevrolet cobalt rpo code list, p.1.
GM factory document — 2007 chevrolet cobalt rpo code list, p.1.
GM factory document — 2008 chevrolet cobalt rpo code list, p.1.
GM factory document — 2009 chevrolet cobalt rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Cobalt, p.41.
GM Heritage factory kit — 2007 Chevrolet Cobalt, p.30.

Colorado — GMT355 (2004–2012)

2004 Factory-verified internal

GM factory document — 2004 chevrolet colorado pickup 2wd rpo code list, p.1.

Corvette — C6 (2005–2013)

2007–2009 Factory-verified internal

GM factory document — 2007 chevrolet corvette rpo code list, p.1.
GM factory document — 2008 chevrolet corvette rpo code list, p.1.
GM factory document — 2009 chevrolet corvette rpo code list, p.1.

Express — GMT610 (2003–2027)

2004–2010 Factory-verified internal

GM factory document — 2004 chevrolet express 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.16.

HHR (2006–2011)

2006–2009 Factory-verified internal

GM factory document — 2006 chevrolet hhr rpo code list, p.1.
GM factory document — 2007 chevrolet hhr rpo code list, p.1.
GM factory document — 2008 chevrolet hhr rpo code list, p.1.
GM factory document — 2009 chevrolet hhr rpo code list, p.1.

Impala — ninth generation (2006–2016)

2006–2009 Factory-verified internal

GM factory document — 2006 chevrolet impala rpo code list, p.1.
GM factory document — 2007 chevrolet impala rpo code list, p.1.
GM factory document — 2008 chevrolet impala rpo code list, p.1.
GM factory document — 2009 chevrolet impala rpo code list, p.1.

Malibu — Sixth generation, Epsilon (2004–2008)

2005–2008 Factory-verified internal

shared Epsilon code (Pontiac G6, Saturn Aura).

GM factory document — 2005 chevrolet malibu rpo code list, p.1.
GM factory document — 2006 chevrolet malibu rpo code list, p.1.
GM factory document — 2007 chevrolet malibu rpo code list, p.1.
GM factory document — 2008 chevrolet malibu classic rpo code list, p.1.
GM Heritage factory kit — 2005 Chevrolet Malibu, p.22.

Malibu — Epsilon II (2008–2012)

2008–2009 Factory-verified internal

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

Monte Carlo — sixth generation (2000–2007)

2006–2007 Factory-verified internal

A second entry in the 2006 and 2007 lists reads "California A, Lev 2".

GM factory document — 2006 chevrolet monte carlo rpo code list, p.1.
GM factory document — 2007 chevrolet monte carlo rpo code list, p.1.

Silverado — GMT900 (2007–2013)

2009 Factory-verified internal

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014)

2009 Factory-verified internal

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

SSR (2003–2006)

2005–2006 Factory-verified internal

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

Suburban — GMT900 (2007–2014)

2007–2009 Factory-verified internal

GM factory document — 2007 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet chevy suburban 2wd rpo code list, p.1.
GM Heritage factory kit — 2007 Chevrolet Suburban, p.34.

Tahoe — GMT900 (2007–2014)

2007–2009 Factory-verified internal

GM factory document — 2007 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2008 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2007 Chevrolet Tahoe, p.28.

TrailBlazer — GMT360 (2002–2009)

2004, 2005, 2009 Factory-verified internal

GM Heritage factory kit — 2004 Chevrolet Trailblazer, p.33.
GM factory document — 2004 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet trailblazer 2wd rpo code list, p.1.
GM factory document — 2009 chevrolet trailblazer 2wd rpo code list, p.1.

Uplander (2005–2008)

2005–2007 Factory-verified internal

the 2005 list reads LEV2; the 2006 and 2007 lists read Lev 2

GM factory document — 2005 chevrolet uplander rpo code list, p.1.
GM factory document — 2006 chevrolet uplander rpo code list, p.1.
GM factory document — 2007 chevrolet uplander rpo code list, p.1.

This page aggregates every documented appearance of NU1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.