- 2020 Single-source
extra cost; not on 1SV; with Light Neutral with Ebony or Ebony interiors only; touch-up paint WA-425E; 2020 rests only on GM Authority's article on the new color
G4F Single-source
Documented applications
This page aggregates every documented appearance of G4F in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.