U63 ✓ Factory-verified

Cadillac · Regular Production Option

Speaker system, 9, premium

Years 2004–09 Models 1 Factory citations 2

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Also documented for BuickChevroletGMCPontiac

Documented applications

XLR — Y-body (2004–2009) →

• 2004–2009 ✓ Factory-verified
  ⛭ GM factory document — 2004 cadillac xlr rpo code list, p.1.

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

This page aggregates every documented appearance of U63 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.