Engine, flexible fuel (gas/ethanol), 6 cylinder, 3.9L, V6, sequential fuel injection, WT, offset bore, GMNA

Years 2007, 2009 Models 2 Factory citations 2

Also described as Engine, flexible fuel (gas/ethanol), 6 cylinder, 3.9L, V6, sequential fuel injection, offset bore, GMNA

Also documented for Chevrolet

Documented applications

Lucerne — G-body (2006–2011)

2009 Factory-verified

GM factory document — 2009 buick lucerne rpo code list, p.1.

Terraza — U-body / GMT201 (2005–2007)

2007 Factory-verified

3.9 L flex-fuel option in 2007 (Wikipedia)

GM factory document — 2007 buick terraza rpo code list, p.1.

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