Brake, automatic vehicle hold

Years 2023, 2025–27 Models 3 Factory citations 15

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Also described as Auto vehicle hold (brake)

Also documented for Chevrolet

Documented applications

CT4 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

Luxury, Premium Luxury, Sport, V-Series: S; V-Series Blackwing: O

GM factory document — 2025 cadillac ct4 fleet order guide, p.6.
GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.6.
GM factory document — 2026 cadillac ct4 fleet order guide, p.7.
GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.7.

CT5 — Alpha 2 (2020–2026)

2025–2026 Factory-verified

Premium Luxury, Sport: S; V-Series: S; V-Series Blackwing: O

GM factory document — 2025 cadillac ct5 fleet order guide rpo codes, p.1.
GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct5 fleet order guide rpo codes, p.1.
GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide rpo codes, p.1.
GM factory document — 2025 cadillac ct5 fleet order guide, p.7.
GM factory document — 2026 cadillac ct5 fleet order guide, p.7.
GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide, p.7.
GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide, p.8.

Escalade — T1XX, 5th gen (2021–2027)

2023, 2025–2027 Factory-verified

2027: S on all trims

GM factory document — 2023 cadillac 23 escalade escalade esv electrical body builder sm en us 2022oct25, p.11.
GM factory document — 2025 cadillac new escalade escalade v fleet order guide, p.7.
GM factory document — 2027 cadillac escalade escalade v fleet order guide, p.8.

This page aggregates every documented appearance of JM8 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.