GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2006 🢒 ION 🢒 Accessories 🢒 Cellular Communication 🢒 Cellular Communication Component Views
Figure 1:

Antenna and Receiver Locations (U2K, UE1)
Object Number: 1615600 Size: LF
(1)Digital Radio Receiver (U2K)
(2)Vehicle Communication Interface Module (VCIM)
(3)Cellular/Navigational and Digital Radio Antenna (U2K/UE1)
Figure 2:

Inside Rearview Mirror
Object Number: 1539160 Size: MF
(1)Headlight Sensor (DF5)
(2)OnStar® Indicator (UE1)
(3)Emergency Button (UE1)
(4)OnStar® Call Center Button (UE1)
(5)OnStar® Microphone (UE1)
(6)Answer/End Call Button (UE1)
(7)Inside Rearview Mirror (ISRVM) On./Off Button (DF5)