- 2025–2026 Factory-verified
touch-up WA-230K; additional charge; the 2026 upfitter list names it Papaya Solid (230K); in 2026 built out for the model year
GBF Factory-verified
Also documented for Chevrolet
Documented applications
This page aggregates every documented appearance of GBF in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.