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

Years 1999–08 Models 5 Factory citations 33

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 GMC Hummer

Documented applications

Express — GMT610 (2003–2027)

2003–2005, 2007 Factory-verified

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 rpo code list, p.1.
GM factory document — 2007 chevrolet express rpo code list, p.1.

Silverado — GMT800 (1999–2007)

1999–2007 Factory-verified

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

GM factory document — 1999 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 — 2001 Chevrolet Silverado, p.56.
GM Heritage factory kit — 2005 Chevrolet Silverado 1500HD, p.128.
GM Heritage factory kit — 2007 Chevrolet Silverado, p.60.

Silverado HD — GMT800 (2001–2007)

2001–2007 Factory-verified

GM factory document — 2001 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 — 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.
GM Heritage factory kit — 2001 Chevrolet Silverado HD, p.62.
GM Heritage factory kit — 2002 Chevrolet Silverado HD, p.41.
GM Heritage factory kit — 2003 Chevrolet Silverado 2500, p.236.
GM Heritage factory kit — 2005 Chevrolet Silverado 2500HD, p.163.

Silverado HD — GMT900 (2007–2014)

2007–2008 Factory-verified

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

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

Suburban — GMT800 (2000–2006)

2000–2006 Factory-verified

Wikipedia (Chevrolet Suburban) names the 6.0L LQ4, standard on the 2500 and optional on the 1500 in 2006; 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 chevrolet chevy suburban 2wd rpo code list, p.1.
GM factory document — 2001 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 — 2001 Chevrolet Suburban, p.51.
GM Heritage factory kit — 2003 Chevrolet Suburban, p.38.
GM Heritage factory kit — 2005 Chevrolet Suburban, p.136.

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