P1U Factory-verified

Chevrolet · Regular Production Option

API Starter, 36 months

Years 2021–24, 2026–27 Models 19 Factory citations 45

Query this via API →

Also described as OnStar Assurance for Tier3 Fleets, additional 45 monthsAPI Starter plan, 36 months (fleet)

Also documented for Buick Cadillac GMC

Documented applications

Blazer — C1XX (2019–2026)

2026 Factory-verified

all trims: O

GM factory document — 2026 chevrolet blazer fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet blazer fleet order guide, p.41.

Blazer EV (2024–2027)

2026–2027 Factory-verified

GM factory document — 2026 chevrolet blazer ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet blazer ev fleet order guide rpo codes, p.1.

Bolt — second generation (2027)

2027 Factory-verified

LT, RS: O

GM factory document — 2027 chevrolet new bolt fleet order guide, p.29.

BrightDrop (2022–2026)

2026 Factory-verified

O: 400, 600;

GM factory document — 2026 chevrolet brightdrop 400 and brightdrop 600 fleet order guide, p.31.

Colorado — Third generation (2023–2027)

2026–2027 Factory-verified

2026–2027: O on all trims

GM factory document — 2026 chevrolet colorado fleet order guide, p.85.
GM factory document — 2027 chevrolet colorado fleet order guide, p.83.

Corvette — C8 (2020–2027)

2021–2024 Factory-verified

the 2024 list prints OnStar Fleet Assurance; another service under the same code in 2026–2027

GM factory document — 2021 chevrolet corvette fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet corvette stingray order guide copy corvetteblogger, p.52.
GM factory document — 2023 chevrolet corvette stingray z06 order guide copy corvetteblogger, p.95.
GM factory document — 2024 chevrolet corvette stingray z06 e ray order guide copy corvetteblogger, p.152.
2026–2027 Factory-verified

another service under the same code in 2021–2024

GM factory document — 2026 chevrolet corvette fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet corvette fleet order guide rpo codes, p.1.

Equinox EV — Ultium BEV2 (2024–2027)

2026–2027 Factory-verified

2026–2027: A in all trims (requires UE1)

GM factory document — 2026 chevrolet equinox ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet equinox ev fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet equinox ev fleet order guide, p.45.
GM factory document — 2027 chevrolet equinox ev fleet order guide, p.47.

Equinox — Fourth generation (2025–2027)

2026–2027 Factory-verified

O on all trims; fleet, fleet daily rental and government order types; fleet telematics data plan

GM factory document — 2026 chevrolet equinox fleet order guide, p.43.
GM factory document — 2027 chevrolet equinox fleet order guide, p.43.

Express — GMT610 (2003–2027)

2026–2027 Factory-verified

O: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2026), Passenger 1LS, Passenger 1LT

GM factory document — 2026 chevrolet express cargo fleet order guide, p.51.
GM factory document — 2026 chevrolet express cutaway fleet order guide, p.74.
GM factory document — 2026 chevrolet express passenger fleet order guide, p.44.
GM factory document — 2027 chevrolet express cargo fleet order guide, p.49.
GM factory document — 2027 chevrolet express cutaway fleet order guide, p.37.
GM factory document — 2027 chevrolet express passenger fleet order guide, p.42.

Silverado EV — BT1 (2024–2027)

2026–2027 Factory-verified

2026–2027: A in all groups

GM factory document — 2026 chevrolet silverado ev fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado ev fleet order guide rpo codes, p.1.
GM factory document — 2026 chevrolet silverado ev fleet order guide, p.91.
GM factory document — 2027 chevrolet silverado ev fleet order guide, p.74.

Silverado 1500 — Fifth generation (2027)

2027 Factory-verified

GM factory document — 2027 chevrolet next generation silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Silverado HD (T1XX, 2020–2027)

2026–2027 Factory-verified

GM factory document — 2026 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2027 chevrolet silverado 2500 hd retail and fleet fleet order guide rpo codes, p.1.

Silverado Medium Duty (GM515, 2019–2026)

2026 Factory-verified

GM factory document — 2026 chevrolet silverado 4500 hd 5500 hd and 6500 hd fleet order guide rpo codes, p.1.

Silverado — T1XX (2019–2026)

2026 Factory-verified

GM factory document — 2026 chevrolet silverado 1500 retail and fleet fleet order guide rpo codes, p.1.

Suburban — T1XX (2021–2027)

2026–2027 Factory-verified

2027: O on all trims

GM factory document — 2026 chevrolet suburban fleet order guide, p.84.
GM factory document — 2027 chevrolet suburban fleet order guide, p.80.

Tahoe — T1XX (2021–2027)

2026–2027 Factory-verified

2027: O on all trims

GM factory document — 2026 chevrolet tahoe retail and fleet fleet order guide, p.111.
GM factory document — 2027 chevrolet tahoe retail and fleet fleet order guide, p.103.
GM factory document — 2027 chevrolet tahoe police package and special service fleet order guide, p.37.

Trailblazer — First generation, VSS-F (2021–2027)

2026–2027 Factory-verified

all trims: O; 2026 and 2027 only

GM factory document — 2026 chevrolet trailblazer fleet order guide, p.43.
GM factory document — 2027 chevrolet trailblazer limited fleet order guide, p.45.

Traverse — Third generation (2024–2027)

2026–2027 Factory-verified

O on all trims; fleet or government order types (US)

GM factory document — 2026 chevrolet traverse fleet order guide, p.59.
GM factory document — 2027 chevrolet traverse fleet order guide, p.59.

Trax — Second generation, VSS-F (2024–2026)

2026 Factory-verified

all trims: O

GM factory document — 2026 chevrolet trax fleet order guide, p.57.

This page aggregates every documented appearance of P1U in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.