ER3 ✓ Factory-verified

Cadillac · Regular Production Option

Battery pack, propulsion

Years 2026–27 Models 1 Factory citations 2

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Documented applications

Optiq — BEV3 (2025–2027) →

• 2026–2027 ✓ Factory-verified

  85 kWh rated energy, rechargeable energy storage system

  ⛭ GM factory document — 2026 cadillac all electric optiq optiq v fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 cadillac all electric optiq optiq v fleet order guide rpo codes, p.1.

This page aggregates every documented appearance of ER3 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.