WB4 ✓ Factory-verified

Buick · Regular Production Option

Merchandised package, Lucerne Super Series

Years 2009 Models 1 Factory citations 1

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Documented applications

Lucerne — G-body (2006–2011) →

• 2009 ✓ Factory-verified

  The 2008 list has a row with no code ("TBD") for the Super package that names WB4 in parentheses; 2008 is not counted here.

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

This page aggregates every documented appearance of WB4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.