H3 ● Confirmed

Buick · Regular Production Option

Automatic level control

Years 1970 Models 1

Documented applications

Full-Size — LeSabre / Electra / Wildcat →

• 1970 ● Confirmed

  Full-size, wagons

This page aggregates every documented appearance of H3 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.