- 2027 Factory-verified
derived from the 40/20/40 split bench with the 20 percent section removed; no floor console, exposed floor area left untrimmed
Also described as Seat, front row, 20% center seat delete (SEO)
Also documented for GMC
Documented applications
- 2025–2027 Factory-verified
only in: 2500 HD, 3500 HD, 3500 HD chassis cab; individual seats from the 40/20/40 split bench with the 20% section removed; no floor console, floor area left untrimmed; removes the USB port and auxiliary power outlet when the AZ3 bench is ordered
- 2020, 2025–2026 Factory-verified
made from the 40/20/40 split bench with its 20% section removed; removes the USB port and auxiliary power outlet when AZ3 bench seat is ordered; no floor console and the exposed floor area stays untrimmed;
- 2025–2027 Factory-verified
2027: police guides: O on both columns; printed by the Tahoe police package and special service guides, not by the retail and fleet guides; the police guides read front center seat (20% seat) delete with the power driver and passenger bucket seats removed
This page aggregates every documented appearance of 5Y1 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.