- 1998–2005 Factory-verified
YF7 Factory-verified
Also described as Upfitter package
Also documented for CadillacChevrolet
Documented applications
- 1998–2000 Factory-verified
- 2003–2010, 2014–2016 Factory-verified
- 1998–2000 Factory-verified
- 1999–2000 Factory-verified
- 1998–1999 Factory-verified
- 1998–1999 Factory-verified
- 2000 Factory-verified
This page aggregates every documented appearance of YF7 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.