- 2002–2009 Factory-verified
QTM Factory-verified
Also described as Tires, 235/50R20, all-season blackwall
Also documented for BuickChevroletOldsmobile
Documented applications
- 2026–2027 Factory-verified
O: Denali; not offered: Elevation, AT4; included in, and only available with, RTU
This page aggregates every documented appearance of QTM in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.