Engine, gas, 8 cylinder, 6.0L, multiport fuel injection, iron, GM

Years 1999–08 Models 5 Factory citations 21

Also described as Engine, 6.0L V8 (Vortec 6000), iron blockEngine, gasoline, 8 cylinder, 6.0L, multiport fuel injection, iron block, GM

Also documented for Chevrolet Hummer

Documented applications

Savana — GMT610 (2003–2027)

2003–2005, 2007 Factory-verified

GM factory document — 2003 gmc savana rpo code list, p.1.
GM factory document — 2005 gmc savana rpo code list, p.1.
GM factory document — 2007 gmc savana rpo code list, p.1.

Sierra — GMT800 (1999–2007)

1999–2007 Factory-verified

2005–2007: heavy-duty models only (GM’s HD list)

GM factory document — 1999 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)

2001–2007 Factory-verified

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1.
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

printed in the 2007–2008 lists only; the 2009 list prints LY6 and the 2014 guides L96

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

Yukon — GMT800 (2000–2006)

2000–2006 Factory-verified

Wikipedia names the 6.0L V8 for the Yukon and (Chevrolet Suburban) as standard on the 2500, so it is the Yukon XL 2500's engine; the 2001–2006 lists print the cylinder count as 8 CYC, the 2000 list words it as the 6.0L V8 SFI Gen III

GM factory document — 2000 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2001 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2002 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2003 gmc yukon 2wd rpo code list, p.1.
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.

This page aggregates every documented appearance of LQ4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.