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Home >> Chevrolet >> 2009 >> Traverse LS, AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Cellular System, Entertainment System & Navigation System >> Diagnostic Information and Procedures >> OnStar Call Center Remote Function Requests Inoperative >> Circuit/System Description

Circuit/System Description

The communication interface module (CIM) has the capability of commanding the horn, initiating door lock/unlock, or operating the exterior lamps using the serial data circuits. These functions are commanded by the OnStar® Call Center per a customer request.