- 2003–2010, 2014–2018, 2022–2027 Factory-verified
the 2025–2027 guides read Tire, spare delete; O on all trims; in the 2025–2027 guides only in the Cargo guides
ZX9 Factory-verified
Also documented for ChevroletOldsmobilePontiac
Documented applications
This page aggregates every documented appearance of ZX9 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.