ECK ✓ Factory-verified

Buick · Regular Production Option

Driver shift control

Years 2025–27 Models 2 Factory citations 6

Query this via API →

Also documented for Chevrolet

Documented applications

Encore GX — VSS-F (2020–2027) →

• 2025–2027 ✓ Factory-verified

  Preferred, Sport Touring, Avenir: S

  ⛭ GM factory document — 2025 buick encore gx fleet order guide, p.7.

  ⛭ GM factory document — 2026 buick encore gx fleet order guide, p.7.

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

Envision — E2XX (2021–2027) →

• 2025–2027 ✓ Factory-verified

  2027: all trims: S; the full guide adds tap-up/tap-down on the shifter

  ⛭ GM factory document — 2025 buick envision fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 buick envision fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 buick envision fleet order guide, p.7.

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