- 2014–2019 Factory-verified
touch-up WA-9075; 2014, 2019: from GM order-guide copies (Corvette Action Center; 2019 also GM Authority)
GKZ Factory-verified
Documented applications
- 2020, 2022–2027 Factory-verified
touch-up WA-9075
This page aggregates every documented appearance of GKZ in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.