GM Service Manual Online
For 1990-2009 cars only
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:

Driver Door


Object Number: 1538473  Size: MF
(1)Driver Outside Rearview Mirror
(2)LF Door Tweeter Speaker (UZ6)
(3)Driver Door Jamb Switch
(4)Instrument Panel (I/P) Dimmer Switch
(5)Fog Lamp Switch (T37)
(6)Rear Compartment Lid Release Switch
(7)LF Door Speaker
(8)Outside Rearview Mirror Switch (DG7)
(9)Window Switch - Driver (A31)
(10)Door Lock Switch - Driver
Figure 3:

Front Passenger Door


Object Number: 1538474  Size: MF
(1)Radio
(2)Passenger Door Jamb Switch
(3)RF Door Tweeter Speaker (UZ6)
(4)Radio Antenna
(5)Passenger Outside Rearview Mirror
(6)Front Passenger Door Lock Switch
(7)Front Passenger Window Switch (A31)
(8)RF Door Speaker
Figure 4:

Instrument Panel


Object Number: 1538303  Size: MF
(1)Turn Signal/Multifunction Switch
(2)Windshield Wiper/Washer Switch
(3)Hazard Switch
(4)Instrument Panel Cluster (IPC)
(5)Traction Control Switch (NW7)
(6)Radio
(7)A/T Shifter (MN5)
(8)HVAC Control Assembly
(9)Steering Wheel Controls - Right (K34)
(10)Steering Wheel Controls - Left (K34)
(11)Rear Compartment Lid Release Switch
Figure 5:

Left Side of the Luggage Compartment


Object Number: 1538476  Size: MF
(1)Digital Radio Receiver (U2K)
Figure 6:

Luggage Compartment


Object Number: 1538475  Size: MF
(1)LR Speaker
(2)Audio Amplifier (UZ6)
(3)Rear Compartment Courtesy Lamp
(4)RR Speaker
Figure 7:

Rear Shelf of the Vehicle


Object Number: 898034  Size: MF
(1)Speaker - RR
(2)Speaker - LR
(3)G401
(4)G403
Figure 8:

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 9:

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)