C73 ✓ Factory-verified

Cadillac · Regular Production Option

Tail lamps, neutral-density

Years 2025–26 Models 2 Factory citations 12

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Documented applications

CT4 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

  Sport, V-Series, V-Series Blackwing: S

  ⛭ 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.6.

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

CT5 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

  Premium Luxury: not available; Sport: S; V-Series, V-Series Blackwing: S

  ⛭ 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.6.

  ⛭ GM factory document — 2026 cadillac ct5 fleet order guide, p.6.

  ⛭ GM factory document — 2025 cadillac ct5 v ct5 v blackwing fleet order guide, p.6.

  ⛭ GM factory document — 2026 cadillac ct5 v ct5 v blackwing fleet order guide, p.7.

Related codes · mentioned in these notes

SV

This page aggregates every documented appearance of C73 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.