- 1998–2000 Factory-verified
K19 Factory-verified
Also described as Reactor system, AIR injection
Also documented for CadillacChevrolet
Documented applications
- 1999–2000 Factory-verified
- 1999 Factory-verified
- 1999 Factory-verified
This page aggregates every documented appearance of K19 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.