- 1999–2000 Factory-verified
GM prints "Supension"
6GK Factory-verified
Also documented for CadillacChevrolet
Documented applications
- 1999 Factory-verified
GM prints "Supension"
- 1999 Factory-verified
GM prints "Supension"
This page aggregates every documented appearance of 6GK in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.