PRE Factory-verified

Buick · Regular Production Option

API Elite, 12 months

Years 2018–19, 2026–27 Models 7 Factory citations 12

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Also described as OnStar Security service, 42 months added, fleetOnStar Security Service, 42 months

Also documented for Cadillac Chevrolet GMC

Documented applications

Cascada — Delta II (2016–2019)

2019 Factory-verified

1SP, 1SH: O; requires UE1 and a fleet or government order type

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

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

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

Envision — D2XX, imported from China (2016–2020)

2019 Factory-verified

1SD, 1SL, 1SN, 1SP: O; fleet or government order types; for sales through April 30, 2018

GM factory document — 2019 buick envision order guide copy gm authority, p.31.

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.38.

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.37.

Regal — E2XX (2018–2020)

2018 Factory-verified

only in: Sportback

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.

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