P1N ✓ Factory-verified

Buick · Regular Production Option

API Pro, 12 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

  2026: Preferred, Sport Touring: O; Avenir: S; 2027: O on all trims; fleet telematics data plan

  ⛭ GM factory document — 2026 buick enclave fleet order guide, p.41.

  ⛭ GM factory document — 2027 buick enclave fleet order guide, p.41.

Encore GX — VSS-F (2020–2027) →

• 2026–2027 ✓ Factory-verified

  Preferred, Sport Touring, Avenir: O; includes DTC

  ⛭ GM factory document — 2026 buick encore gx fleet order guide, p.47.

  ⛭ GM factory document — 2027 buick encore gx fleet order guide, p.45.

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.36.

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.35.

This page aggregates every documented appearance of P1N in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.