Engine, gas, 6 cylinder, 4.3L, multiport fuel injection, V6, 90 degree

Years 2002–10, 2014 Models 5 Factory citations 16

Also described as Engine, gas, 6 cylinder, 4.3 L, multiport fuel injection, V6, 90 degreeEngine, 4.3L V6 (Vortec 4300), MFIEngine, gas, 6 cylinder, 4.3 L V6, multiport fuel injection, 90 degree

Also documented for Chevrolet

Documented applications

Safari — Second generation (1995–2005)

2002–2005 Factory-verified

GM factory document — 2002 gmc safari 2wd rpo code list, p.1.
GM factory document — 2003 gmc safari 2wd rpo code list, p.1.
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)

2003–2010, 2014 Factory-verified

GM factory document — 2003 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.15.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.13.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.13.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.7.

Sierra — GMT800 (1999–2007)

2002–2007 Factory-verified

GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified

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

Sonoma — second generation (1994–2004)

2003–2004 Factory-verified

Wikipedia gives the Sonoma a 4.3 L V6

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.

This page aggregates every documented appearance of LU3 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.