SiriusXM, additional 9 months of the SXM Platinum Plan

Years 2016–19, 2022–23, 2025–27 Models 10 Factory citations 29

Also described as SiriusXM All Access, 9 months added, fleetSiriusXM, 9 months added, fleetAPI Elite, 24 monthsSiriusXM Satellite Radio, additional 9 months of the All Access packageSiriusXM Satellite Radio, additional 9 months of the SiriusXM All Access PackageSiriusXM satellite radio, All Access package, additional 9 months

Also documented for Cadillac Chevrolet GMC

Documented applications

Cascada — Delta II (2016–2019)

2017–2019 Factory-verified

1SP, 1SH: O; requires U2K and a fleet or government order type

GM factory document — 2017 buick cascada order guide copy gm authority, p.19.
GM factory document — 2018 buick cascada order guide copy gm authority, p.20.
GM factory document — 2019 buick cascada order guide copy gm authority, p.20.

Enclave — C1XX (2018–2024)

2018, 2022–2023 Factory-verified

all trims: O; fleet orders; All Access in 2018 (GM order guide via GM Authority), Platinum Plan in 2022–2023

GM factory document — 2018 buick enclave order guide copy gm authority, p.30, p.37.
GM factory document — 2022 buick enclave order guide copy nhtsa docket, p.41.
GM factory document — 2023 buick enclave order guide copy autoevolution wayback, p.39.

Enclave — VSS-S (2025–2027)

2025 Factory-verified

O on all trims; another meaning from 2026: API Elite (see the next row)

GM factory document — 2025 buick all new enclave fleet order guide, p.34.
2026–2027 Factory-verified

O on all trims; fleet telematics data plan; the 2025 guide uses PR6 for the SiriusXM extension instead

GM factory document — 2026 buick enclave fleet order guide, p.43.
GM factory document — 2027 buick enclave fleet order guide, p.43.

Encore — Gamma II (2013–2022)

2018–2019 Factory-verified

fleet and government orders; requires U2K; not on Encore 1SV

GM factory document — 2018 buick encore order guide copy gm authority, p.28.
GM factory document — 2019 buick encore order guide copy gm authority, p.25.

Encore GX — VSS-F (2020–2027)

2025 Factory-verified

Preferred, Sport Touring, Avenir: O; 2025 reading; 2026–2027 give this code a different meaning (next row)

GM factory document — 2025 buick encore gx fleet order guide, p.39.
2026–2027 Factory-verified

Preferred, Sport Touring, Avenir: O; the 2025 guide gives this code a different meaning (SiriusXM, previous row)

GM factory document — 2026 buick encore gx fleet order guide, p.50.
GM factory document — 2027 buick encore gx fleet order guide, p.48.

Envision — E2XX (2021–2027)

2025 Factory-verified

2025: all trims: O

GM factory document — 2025 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envision fleet order guide, p.28.
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; the 2025 list gives this code another reading

GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2026 buick envista fleet order guide, p.37.
2025 Factory-verified

all trims: O; needs SiriusXM (U2K) and a fleet or government order type; the 2026 list gives this code another reading

GM factory document — 2025 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envista fleet order guide, p.27.

LaCrosse — E2XX, 3rd gen (2017–2019)

2018–2019 Factory-verified

2019: Preferred, Sport Touring, Essence, Premium, Avenir: O

GM factory document — 2018 buick lacrosse order guide copy gm authority, p.24.
GM factory document — 2019 buick lacrosse order guide copy gm authority, p.33.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

2019: Preferred, Preferred II, Essence, Avenir, GS: O (2019 Sportback order guide); fleet orders

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.34.

Regal — Epsilon II, 5th gen (2011–2017)

2016 Factory-verified

2016: all groups: O; requires U2K and a fleet or government order type; 12 months in all

GM factory document — 2016 buick regal order guide copy gm authority, p.31.

This page aggregates every documented appearance of PR6 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.