D1 / D5 / D6 / D0 ● Confirmed

Buick · Regular Production Option

Sonomatic AM / AM-FM / rear speaker / stereo tape

Years 1970 Models 1

Documented applications

Skylark / GS →

• 1970 ● Confirmed

  All intermediates

This page aggregates every documented appearance of D1 / D5 / D6 / D0 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.