HI9 Factory-verified

GMC · Regular Production Option

Interior trim, leather, level 2, Jet Black / Brandy

Years 2022–23 Models 2 Factory citations 4
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Also documented for Buick

Documented applications

This page aggregates every documented appearance of HI9 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.