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

Years 2006, 2008–10 Models 4 Factory citations 7

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Also documented for GMC

Documented applications

Express — GMT610 (2003–2027)

2006, 2008–2010 Factory-verified

GM factory document — 2006 chevrolet express rpo code list, p.1.
GM factory document — 2008 chevrolet express rpo code list, p.1.
GM factory document — 2009 chevrolet express rpo code list, p.1.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.13.

Silverado — GMT900 (2007–2013)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Silverado HD — GMT900 (2007–2014)

2009 Factory-verified

GM factory document — 2009 chevrolet silverado 2wd rpo code list, p.1.

Suburban — GMT900 (2007–2014)

2009 Factory-verified

Wikipedia's Suburban page names the 6.0L LY6 V8 for the 2500; the list shows it for 2009.

GM factory document — 2009 chevrolet chevy suburban 2wd rpo code list, p.1.

This page aggregates every documented appearance of LY6 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.