Market brand, Buick

Years 2004, 2006–09 Models 3 Factory citations 6

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Also documented for GMC

Documented applications

Enclave — Lambda / GMT967 (2008–2017)

2008–2009 Factory-verified internal

GM factory document — 2008 buick enclave rpo code list, p.1.
GM factory document — 2009 buick enclave rpo code list, p.1.

Rainier — GMT360 (2004–2007)

2004, 2006–2007 Factory-verified internal

GM factory document — 2004 buick rainier 2wd rpo code list, p.1.
GM factory document — 2007 buick rainier rpo code list, p.1.

Terraza — U-body / GMT201 (2005–2007)

2006–2007 Factory-verified internal

the same lists also carry the Chevrolet, Pontiac and Saturn market-brand codes, which are left out as other brands

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 W49 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.