- 2006–2009 Factory-verified
QCH Factory-verified
Also documented for CadillacOldsmobilePontiac
Documented applications
- 2003–2005 Factory-verified
- 2002–2003 Factory-verified
The 2003 list prints the size twice ("P235/P235/55R17").
This page aggregates every documented appearance of QCH in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.