C61 ◑ Single-source

Buick · Regular Production Option

Automatic climate control A/C (RPO)

Years 1971–76 Models 1

Documented applications

Riviera →

• 1971–1976 ◑ Single-source

  Riviera

This page aggregates every documented appearance of C61 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.