- 2005 Factory-verified
W20 Factory-verified
Also described as Package, XTS Professional, livery
Documented applications
- 2016–2019 Single-source
only in: XTS Professional; FWD; 2016: GM Authority 2016 XTS Professional changes; 2017: model table of GM Authority 2017 XTS Professional changes; 2018 and 2019: the NICB 2019 manual prints Livery (W20) on its 2019 and 2018 columns [NICB nicb2019-gm.txt p.46]; single-source: no one source dates all four years
This page aggregates every documented appearance of W20 in the Cadillac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.