YQ1 ✓ Factory-verified

Cadillac · Regular Production Option

Infotainment system 009

Years 2005–09 Models 1 Factory citations 2

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Documented applications

STS — Sigma (2005–2011) →

• 2005–2009 ✓ Factory-verified

  The 2009 list prints "9".

  ⛭ GM factory document — 2005 cadillac sts rpo code list, p.1.

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

This page aggregates every documented appearance of YQ1 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.