Engine, diesel, 8 cylinder, 6.6L, direct injection, V8, turbo high, Duramax

Years 2004–07 Models 2 Factory citations 6

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Also described as Engine, diesel, 8 cylinder, 6.6L, direct injection, V8, turbo-high, Duramax

Also documented for GMC

Documented applications

Express — GMT610 (2003–2027)

2007 Factory-verified

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

Silverado HD — GMT800 (2001–2007)

2004–2007 Factory-verified

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 — 2005 Chevrolet Silverado 2500HD, p.193.

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