Insulation, acoustical package, added material

Years 1984, 2023 Models 2 Factory citations 2

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Also described as Group, quiet sound

Also documented for GMC

Documented applications

Citation — X-body (1983–1985)

1984 Factory-verified

only in: coupe

GM Heritage factory kit — 1984 Chevrolet Citation, p.32.

Colorado — Third generation (2023–2027)

2023 Factory-verified

GM factory document — 2023 chevrolet 23colorado electrical body builder, p.10.

This page aggregates every documented appearance of BS2 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.