- 2023 Factory-verified
Essence, Premium: O; dealer-installed; the 2023 guide lists it as not available for ordering at publication
PDM Factory-verified
Also documented for CadillacChevroletGMC
Documented applications
This page aggregates every documented appearance of PDM in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.