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

Years 1967–82, 2006 Models 2 Factory citations 1

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Also described as Bonanza package (GMC Royal Sierra)Identification, P.E.P. vehicle

Also documented for GMC

Documented applications

C/K Trucks

1967–72 Confirmed

Lineage: "Bonanza/Royal Sierra Package" in GM lists
1970s–82 Confirmed

Year-end value package

Express — GMT610 (2003–2027)

2006 Factory-verified internal

GM factory document — 2006 chevrolet express rpo code list, p.1.

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.