- 2009 Factory-verified
GM Authority lists it as deleted for 2013.
QXN Factory-verified
Also described as Tires, P265/65R18 on-/off-road, blackwall
Also documented for CadillacChevroletHummer
Documented applications
- 2016 Factory-verified
new for 2016; the Silverado K2XX doc found QXN deleted for 2017, so 2017 is not claimed although the shared 2017 manual (p.27) still prints it.
- 2007–2009 Factory-verified
This page aggregates every documented appearance of QXN in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.