Engine, diesel, 8 cylinder, 6.6L, DPI, V8, Duramax

Years 2006–10 Models 2 Factory citations 9

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Also documented for Chevrolet

Documented applications

Savana — GMT610 (2003–2027)

2006–2010 Factory-verified

GM factory document — 2006 gmc savana rpo code list, p.1.
GM factory document — 2008 gmc savana rpo code list, p.1.
GM factory document — 2008 chevrolet ld electricalfullsizevans, p.15.
GM factory document — 2009 gmc savana rpo code list, p.1.
GM factory document — 2009 chevrolet ld electricalfullsizevans 100813, p.13.
GM factory document — 2010 chevrolet gh van elec 1 7 d1 100813, p.13.

Sierra HD — GMT900 (2007–2014)

2007–2009 Factory-verified

the 2014 guides print LML instead

GM factory document — 2007 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2008 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.

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