T8Z ✓ Factory-verified

Buick · Regular Production Option

Buckle to Drive

Years 2025–27 Models 2 Factory citations 6

Query this via API →

Also documented for CadillacChevroletGMC

Documented applications

Enclave — VSS-S (2025–2027) →

• 2025–2027 ✓ Factory-verified

  S on all trims; keeps the vehicle in Park until the driver belt is fastened; can be turned off in Settings or the Teen Driver menu

  ⛭ GM factory document — 2025 buick all new enclave fleet order guide, p.2.

  ⛭ GM factory document — 2026 buick enclave fleet order guide, p.2.

  ⛭ GM factory document — 2027 buick enclave fleet order guide, p.2.

Envision — E2XX (2021–2027) →

• 2025–2027 ✓ Factory-verified

  2027: all trims: S

  ⛭ 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.2.

This page aggregates every documented appearance of T8Z in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.