C4U ✓ Factory-verified

Buick · Regular Production Option

GVWR, 4233 lbs. (1920 kg)

Years 2025–27 Models 1 Factory citations 3

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Documented applications

Encore GX — VSS-F (2020–2027) →

• 2025–2027 ✓ Factory-verified

  only in: FWD; 2025–2026: Preferred: O; Sport Touring, Avenir: S. 2027: Preferred, Sport Touring, Avenir: S

  ⛭ GM factory document — 2025 buick encore gx fleet order guide, p.8.

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

  ⛭ GM factory document — 2027 buick encore gx fleet order guide, p.8.

Related codes · mentioned in these notes

FWD

This page aggregates every documented appearance of C4U in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.