FE4 ✓ Factory-verified

Buick · Regular Production Option

Suspension system, special ride and handling

Years 2005–06, 2008–09, 2025–27 Models 4 Factory citations 8

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Also described as Suspension, Performance

Also documented for CadillacChevroletGMCOldsmobilePontiacSaturn

Documented applications

Enclave — VSS-S (2025–2027) →

• 2025–2027 ✓ Factory-verified

  Preferred, Sport Touring: S; Avenir: not offered

  ⛭ GM factory document — 2025 buick all new enclave fleet order guide, p.8.

  ⛭ GM factory document — 2026 buick enclave fleet order guide, p.8.

  ⛭ GM factory document — 2027 buick enclave fleet order guide, p.9.

LaCrosse — W-body / GMX365 (2005–2009) →

• 2008–2009 ✓ Factory-verified
  ⛭ GM factory document — 2008 buick lacrosse rpo code list, p.1.

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

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) →

• 2005–2006 ✓ Factory-verified
  ⛭ GM factory document — 2005 buick terraza rpo code list, p.1.

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

This page aggregates every documented appearance of FE4 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.