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OnStar Schematics

WARNING: This page is about a different car, the 2005 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Power, Ground, VCIM, ISRVM Schematics
GM1372048Courtesy of GENERAL MOTORS CORP.
Fig 2: VCIM, DLC Schematics
GM1372049Courtesy of GENERAL MOTORS CORP.
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