- 2015–2017, 2019, 2021–2022 Factory-verified
2015–2016: SL: S; Canyon: O; SLE, SLT: not offered; extended cab only; requires B38; 2021 from the upfitter list GM files for 2021 and 2022
ATZ Factory-verified
Also described as Seat delete, rearSeat, rear, not installedRear seat, delete
Also documented for BuickCadillacChevroletOldsmobile
Documented applications
- 2003–2009 Factory-verified
- 2000, 2004, 2005 Factory-verified
2000 list reads "Seat, Right Rear, Delete".
- 1998–2000 Factory-verified
- 1998–1999 Factory-verified
- 1998–1999 Factory-verified
This page aggregates every documented appearance of ATZ in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.