NU4 Factory-verified

GMC · Regular Production Option

Emission system, California, LEV2 plus

Years 2003–10, 2014–15, 2017 Models 10 Factory citations 31

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Also described as Emission system, California, Level 2 plusEmissions, California Level 2 PlusEmission system, California Level 2 Plus

Also documented for Buick Cadillac Chevrolet Hummer Oldsmobile Pontiac Saturn

Documented applications

Canyon — GMT355 (2004–2012)

2005, 2006 Factory-verified internal

GM factory document — 2005 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2006 gmc canyon pickup 2wd rpo code list, p.1.

Envoy — GMT360 (2002–2009)

2004–2007 Factory-verified internal

GM factory document — 2004 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2005 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2007 gmc envoy 4wd rpo code list, p.1.

Safari — Second generation (1995–2005)

2004, 2005 Factory-verified internal

GM factory document — 2004 gmc safari 2wd rpo code list, p.1.
GM factory document — 2005 gmc safari 2wd rpo code list, p.1.

Savana — GMT610 (2003–2027)

2004–2010, 2014–2015, 2017 Factory-verified internal

GM factory document — 2004 gmc savana rpo code list, p.1.
GM factory document — 2008 gmc savana rpo code list, p.1.
GM factory document — 2008 chevrolet ld electricalfullsizevans, p.18.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.16.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.16.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.7.
GM factory document — 2015 chevrolet express savana electrical body builders manual service manual 2015 en us, p.14.
GM factory document — 2017 chevrolet express savana electrical body builders manual service manual 2017 en us, p.9.

Sierra — GMT800 (1999–2007)

2004–2007 Factory-verified internal

GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra HD — GMT800 (2001–2007)

2004–2007 Factory-verified internal

GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2007–2008 Factory-verified internal

GM factory document — 2007 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2008 gmc sierra 2wd rpo code list, p.1.

Sonoma — second generation (1994–2004)

2003–2004 Factory-verified internal

GM factory document — 2003 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2004 gmc sonoma pickup 4wd rpo code list, p.1.

Yukon — GMT800 (2000–2006)

2004–2006 Factory-verified internal

GM factory document — 2004 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2005 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2006 gmc yukon 2wd rpo code list, p.1.

Yukon — GMT900 (2007–2014)

2007–2009 Factory-verified internal

GM factory document — 2007 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

This page aggregates every documented appearance of NU4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.