U03 ✓ Factory-verified

Buick · Regular Production Option

Horn noise regulation

Years 2002 Models 2 Factory citations 2

Query this via API →

Also documented for CadillacChevrolet

Documented applications

Century — W-body (1997–2005) →

• 2002 ✓ Factory-verified
  ⛭ GM factory document — 2002 buick century rpo code list, p.1.

Regal — W-body (1997–2004) →

• 2002 ✓ Factory-verified
  ⛭ GM factory document — 2002 buick regal rpo code list, p.1.

This page aggregates every documented appearance of U03 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.