LY9 ✓ Factory-verified

Cadillac · Regular Production Option

Engine, gas, 6 cylinder, 2.6L, multiport fuel injection, V6, DOHC, Opel

Years 2003–04 Models 1 Factory citations 2

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Also documented for Chevrolet

Documented applications

CTS — Sigma / GMX320 (2003–2007) →

• 2003–2004 ✓ Factory-verified
  ⛭ GM factory document — 2003 cadillac cts rpo code list, p.1.

  ⛭ GM factory document — 2004 cadillac cts rpo code list, p.1.

This page aggregates every documented appearance of LY9 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.