- 2012 Confirmed
2016 is left out: only with RTJ wheels (p.21); GM's lists print the code QI9; Q19 is another tire in GM's other lists; new for 2012 (GM's 2012 list)
QI9 Confirmed
Documented applications
This page aggregates every documented appearance of QI9 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.