RFS ✓ Factory-verified

Buick · Regular Production Option

API Elite, 36 months

Years 2026–27 Models 4 Factory citations 9

Query this via API →

Also documented for CadillacChevroletGMC

Documented applications

Enclave — VSS-S (2025–2027) →

• 2026–2027 ✓ Factory-verified

  O on all trims; fleet telematics data plan

  ⛭ GM factory document — 2026 buick enclave fleet order guide, p.44.

  ⛭ GM factory document — 2027 buick enclave fleet order guide, p.44.

Encore GX — VSS-F (2020–2027) →

• 2026–2027 ✓ Factory-verified

  Preferred, Sport Touring, Avenir: O

  ⛭ GM factory document — 2026 buick encore gx fleet order guide, p.51.

  ⛭ GM factory document — 2027 buick encore gx fleet order guide, p.49.

Envision — E2XX (2021–2027) →

• 2026–2027 ✓ Factory-verified

  2027: all trims: O

  ⛭ GM factory document — 2026 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.39.

Envista — VSS-F (2024–2027) →

• 2026 ✓ Factory-verified

  all trims: O

  ⛭ GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 buick envista fleet order guide, p.38.

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