- 2027 Factory-verified
Pro: O; AT4, Elevation, AT4X, Denali, Denali Ultimate: not offered; leaves driver and passenger front individual seats derived from the 40/20/40 split bench with the 20% section removed; exposed floor area stays untrimmed
5Y1 Factory-verified
Also described as Seats, front individual, driver and passenger
Also documented for Chevrolet
Documented applications
- 2025–2027 Factory-verified
derived from the 40/20/40 split bench with the 20% section removed; no floor console and exposed floor area stays untrimmed; removes the USB port and auxiliary power outlet when AZ3 is ordered; Pro: O; SLE, SLT, AT4, AT4X, Denali, Denali Ultimate: not offered
- 2020, 2025–2026 Factory-verified
the 2020 list reads "Seat center, front row 20%, center seat delete (SEO)"; the Silverado T1XX doc reads "Seats, front individual driver and passenger"
This page aggregates every documented appearance of 5Y1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.