- 2015–2018 Factory-verified
SLT, Denali; 2015 reads power; the lists read power configurable; 2018 from GM's 2018 Yukon order guide
ATN Factory-verified
Also described as Second-row seats, buckets
Also documented for CadillacChevrolet
Documented applications
- 2022–2023, 2025–2027 Factory-verified
2027: AT4 Ultimate, Denali, Denali Ultimate: S; Elevation, AT4: O
- 2015–2017 Factory-verified
SLE: not available; SLT: A; 2015 reads power
- 2022–2023, 2025–2027 Factory-verified
2027: AT4 Ultimate, Denali, Denali Ultimate: S; Elevation, AT4: O
This page aggregates every documented appearance of ATN in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.