V4W ✓ Factory-verified

Cadillac · Regular Production Option

Model conversion, GMX320, CTS HFV6

Years 2007–09 Models 2 Factory citations 3

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Documented applications

CTS — Sigma II (2008–2015) →

• 2008–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2008 cadillac cts rpo code list, p.1.

  ⛭ GM factory document — 2009 cadillac cts rpo code list, p.1.

CTS — Sigma / GMX320 (2003–2007) →

• 2007 ✓ Factory-verified internal
  ⛭ GM factory document — 2007 cadillac cts rpo code list, p.1.

This page aggregates every documented appearance of V4W in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.