- 2009, 2014–2016 Factory-verified
the 2014–2016 guides read P255/55R20 H-rated blackwall tires.
QQD Factory-verified
Also documented for BuickChevroletSaturn
Documented applications
This page aggregates every documented appearance of QQD in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.