YG8 ● Confirmed

Chevrolet · Regular Production Option

Special promotional package (Bonanza-type year-end group)

Years 1967–82 Models 1

Also described as Bonanza package (GMC Royal Sierra)

Documented applications

C/K Trucks →

• 1967–72 ● Confirmed

  Lineage: "Bonanza/Royal Sierra Package" in GM lists

• 1970s–82 ● Confirmed

  Year-end value package

This page aggregates every documented appearance of YG8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.