- 2015 Factory-verified
2015: all groups: S
USR Factory-verified
Also described as Audio system feature, USB port with iPod connectivity
Also documented for CadillacChevroletGMC
Documented applications
- 2012 Factory-verified
2012: all trims: S (GM 2012 ordering guide); the 2016 guide prints the item with no code
This page aggregates every documented appearance of USR in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.