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Home >> Cadillac >> 2011 >> Escalade EXT >> Repair and Diagnosis (Single Page) >> External Pages >> Different car >> Section 1549 (Cellular Systems, Entertainment Systems & Navigation Systems) >> Schematic and Routing Diagrams >> OnStar Schematics
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OnStar Schematics

WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Module Power, Ground, and Serial Data
GM2224058Courtesy of GENERAL MOTORS CORP.
Fig 2: Communication Signals and Controls
GM2224061Courtesy of GENERAL MOTORS CORP.
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