- 2022–2023 Factory-verified
2022–2023: all trims: S
K6L Factory-verified
Also described as Air filter, pollutant and fine dust
Also documented for CadillacChevroletGMC
Documented applications
- 2025–2027 Factory-verified
S on all trims
This page aggregates every documented appearance of K6L in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.