- 1999–2000 Factory-verified
YYN Factory-verified
Also described as Tire, rear, LT235/85R16E R/PE ST TL ALS BL
Also documented for Chevrolet
Documented applications
- 2000 Factory-verified
This page aggregates every documented appearance of YYN in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.