US4 ✓ Factory-verified

Pontiac · Regular Production Option

Radio, AM/FM stereo, seek/scan, CD, automatic tone, clock, ETR, MP3, RDS, navigation system

Years 2005–08 Models 1 Factory citations 2

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Documented applications

Grand Prix — Eighth generation (2004–2008) →

• 2005–2008 ✓ Factory-verified
  ⛭ GM factory document — 2005 pontiac grand prix rpo code list, p.1.

  ⛭ GM factory document — 2008 pontiac grand prix rpo code list, p.1.

This page aggregates every documented appearance of US4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.