F55 ✓ Factory-verified

Buick · Regular Production Option

Chassis, continuously variable real time damping, magneto rheological

Years 2006–07, 2009 Models 1 Factory citations 2

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Also documented for CadillacChevrolet

Documented applications

Lucerne — G-body (2006–2011) →

• 2006–2007, 2009 ✓ Factory-verified
  ⛭ GM factory document — 2006 buick lucerne rpo code list, p.1.

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

This page aggregates every documented appearance of F55 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.