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“Is it compatible with 06 h3?”

Asked by Iwannahummer 6 years ago

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Metra - Wiring Harness for Select 1998-2008 GM Vehicles - Gray-Front_Standard

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Your Hummer likely is OnStar equipped (mine is) so it will not work. You will need to find a similar fitting harness that explicitly states that it's OnStar compatible.
Answered by BoughtThis 6 years ago
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