Engine, gas, 6 cylinder, 3.9L, sequential fuel injection, WT, V6, offset bore, GM

Years 2006–07, 2009 Models 2 Factory citations 3

Query this via API →

Also described as Engine, gas, 6 cylinder, 3.9L, sequential fuel injection, V6, offset bore, GM

Also documented for Chevrolet Pontiac Saturn

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)

2006–2007 Factory-verified

3.9 L V6 (Wikipedia); the 2006 list prints Cyl

GM factory document — 2006 buick terraza rpo code list, p.1.
GM factory document — 2007 buick terraza rpo code list, p.1.

This page aggregates every documented appearance of LZ9 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.