Engine, gasoline, 8 cylinder, 4.8L, multiport fuel injection, iron block, GM

Years 1999–07 Models 3 Factory citations 20

Also described as Engine, gas, 8 cylinder, 4.8L, multiport fuel injection, iron, GMEngine, 4.8L V8 (Vortec 4800), iron block

Also documented for GMC

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

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 — 2007 Chevrolet Silverado, p.55.

Tahoe — GMT800 (2000–2006)

2000–2006 Factory-verified

Wikipedia (Chevrolet Tahoe) names the 4.8L Vortec 4800 LR4 for 2000–2006 and says it was no longer offered on 4WD after 2005 (the Suburban doc leaves it out, its Wikipedia page names no 4.8L); the 2001–2006 lists print the cylinder count as Cechy, the 2000 list words it as the 4.8L V8 sequential fuel injection Gen III

GM factory document — 2000 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2001 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2002 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2003 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2004 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2005 chevrolet tahoe 2wd rpo code list, p.1.
GM factory document — 2006 chevrolet tahoe 2wd rpo code list, p.1.
GM Heritage factory kit — 2000 Chevrolet Tahoe, p.47.
GM Heritage factory kit — 2001 Chevrolet Tahoe, p.44.
GM Heritage factory kit — 2003 Chevrolet Tahoe, p.31.
GM Heritage factory kit — 2005 Chevrolet Tahoe, p.135.
GM Heritage factory kit — 2006 Chevrolet Tahoe, p.27.

This page aggregates every documented appearance of LR4 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.