EPH ✓ Factory-verified

Cadillac · Regular Production Option

Electronic Precision Shift

Years 2023, 2025–27 Models 9 Factory citations 32

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Also described as Electronic precision shift

Also documented for BuickChevroletGMC

Documented applications

CT4 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

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

  ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.31.

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

  ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.28.

  ⛭ GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.8.

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.8.

  ⛭ GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide, p.9.

Escalade IQ — Ultium BEV (2025–2027) →

• 2027 ✓ Factory-verified
  ⛭ GM factory document — 2027 cadillac all electric escalade iq fleet order guide rpo codes, p.1.

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

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.10.

  ⛭ 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.9.

Lyriq — BEV3 (2023–2027) →

• 2023, 2025–2027 ✓ Factory-verified

  all trims: S; Professional Vehicle (S)

  ⛭ GM factory document — 2023 cadillac all new electric lyriq fleet order guide wayback, p.3.

  ⛭ GM factory document — 2025 cadillac all electric lyriq fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2027 cadillac all electric lyriq professional vehicle fleet order guide rpo codes, p.1.

Optiq — BEV3 (2025–2027) →

• 2025–2027 ✓ Factory-verified
  ⛭ GM factory document — 2025 cadillac all electric optiq fleet order guide rpo codes, p.1.

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

Vistiq — BEV3 (2026–2027) →

• 2026–2027 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2026 cadillac all electric vistiq fleet order guide, p.54.

  ⛭ GM factory document — 2027 cadillac all electric vistiq fleet order guide, p.54.

XT5 — C1XX (2017–2026) →

• 2025–2026 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2026 cadillac xt5 professional vehicles fleet order guide rpo codes, p.1.

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide, p.8.

  ⛭ GM factory document — 2025 cadillac xt5 fleet order guide, p.34.

  ⛭ GM factory document — 2026 cadillac xt5 fleet order guide, p.9.

  ⛭ GM factory document — 2026 cadillac xt5 fleet order guide, p.35.

XT6 — C1XX (2020–2025) →

• 2025 ✓ Factory-verified

  All trims: S

  ⛭ GM factory document — 2025 cadillac xt6 fleet order guide, p.8.

  ⛭ GM factory document — 2025 cadillac xt6 fleet order guide, p.62.

Related codes · mentioned in these notes

OSV

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