Pin Out For Onstar Connectors

By Troy_2
November 23, 2009 in Audio, Electronics & Software

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Troy_2

Posted November 23, 2009

Does anyone with a shop manual for a 2002 2500HD have the pin out for the connectors on the OnStar box? I am trying to hook up a bluetooth box (CoStar BlueStar) in place of the older OnStar box and need to know what pin the Class2 connection is on so I can mute the radio. It appears to be different then what is called out in the installation instructions.

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