- 2015–2019 Factory-verified
2015: LS, LT: S; LTZ: not available; the lists print P265/65R18 SL 112T BW ALS; 2018–2019 from GM's 2018 and 2019 Suburban order guides (GM Authority copies)
RKX Factory-verified
Also documented for GMC
Documented applications
- 2015–2019 Factory-verified
2015: LS, LT: S; LTZ: not available; 2016: Special Service: A, required with NHT; the lists print P265/65R18 SL 112T BW ALS; 2018–2019 from GM's 2018 and 2019 Tahoe order guides (GM Authority copies)
This page aggregates every documented appearance of RKX in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.