Deep Ocean Appearance Package

Years 2017, 2023, 2026 Models 2 Factory citations 2

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Also described as Premium PackageLuxury Level One Package

Also documented for Buick Chevrolet GMC Pontiac

Documented applications

CT5 — Alpha 2 (2020–2026)

2023 Factory-verified

the 2023 list says it includes the Technology, Lighting and Climate Packages plus driver and front passenger lumbar massage; the code names a different package in 2026

GM factory document — 2023 cadillac ct5 v ct5 v blackwing fleet order guide wayback, p.1.
2026 Factory-verified

only in: CT5-V, CT5-V Blackwing

GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.

XTS — Epsilon II, enlarged (2013–2019)

2017 Confirmed

only in: XTS Professional; now includes the ventilated driver and front passenger seats KU9 (GM Authority 2017 XTS Professional changes)

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