- 2008 Factory-verified
the 2008 list reads radio, CD player with MP3, black tie size;
UPX Factory-verified
Also documented for Pontiac
Documented applications
- 2009 Factory-verified
the list repeats it later with automatic reverse and cassette added;
This page aggregates every documented appearance of UPX in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.