Radio, AM/FM stereo, seek/scan, DVD, CD, clock, ETR, navigation, voice recognition, MP3, VICS

Years 2005 Models 1 Factory citations 1

Documented applications

Corvette — C6 (2005–2013)

2005 Factory-verified

Only the 2005 list prints this code; U3Z carries the same wording from 2006.

GM factory document — 2005 chevrolet corvette rpo code list, p.1.

This page aggregates every documented appearance of U3D in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.