D1A–D1D ◑ Single-source

Chevrolet · Regular Production Option

Speedometer driven gear codes

Years 1970–79 Models 1

Documented applications

Camaro →

• 1970s ◑ Single-source

  internal

This page aggregates every documented appearance of D1A–D1D in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.