- 2012 Single-source
letter O as GM prints it (GA0 in the corpus is Emperor Blue, a different paint); 2012: deleted for 2013 per GM Authority 2013 changes, which does not credit GM, so single-source
GAO Single-source
Also documented for Chevrolet
Documented applications
- 2012 Single-source
letter O as GM Authority prints it; GA0 in GM's lists is a different paint (Emperor Blue Metallic); deleted for 2013 (GM Authority 2013 changes); single-source: GM Authority 2013 changes does not credit GM
This page aggregates every documented appearance of GAO in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.