- 1998–2000 Factory-verified
JF9 Factory-verified
Also documented for BuickCadillacChevroletPontiacSaturn
Documented applications
- 1998–1999 Factory-verified
- 1998–1999 Factory-verified
This page aggregates every documented appearance of JF9 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.