E28 ✓ Factory-verified

Cadillac · Regular Production Option

Assist handles

Years 2023, 2025–26 Models 2 Factory citations 13

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Also documented for BuickChevroletGMCOldsmobilePontiac

Documented applications

CT4 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

  all trims: S

  ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.1.

  ⛭ GM factory document — 2025 cadillac ct4 v ct4 v blackwing fleet order guide, p.1.

  ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.1.

  ⛭ GM factory document — 2026 cadillac ct4 v ct4 v blackwing fleet order guide, p.1.

CT5 — Alpha 2 (2020–2026) →

• 2023, 2025–2026 ✓ Factory-verified

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

  ⛭ GM factory document — 2023 cadillac ct5 v ct5 v blackwing fleet order guide wayback, p.1.

  ⛭ 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.1.

  ⛭ GM factory document — 2026 cadillac ct5 fleet order guide, p.1.

  ⛭ GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide, p.1.

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

Related codes · mentioned in these notes

SV

This page aggregates every documented appearance of E28 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.