Radio/Audio System Description and Operation: Notes

The entertainment system on this vehicle may have several different configurations available to it. To determine the specific configuration of the vehicle, please see the Service Parts ID Label, and refer to RPO Code List .

Each item in the list below represents topics covered in detail below.

Radio Circuit Operation
Antenna System
Radio Reception
Digital Radio Receiver (If equipped)
Speaker Operation
Theft Deterrent
OnStar®
Auxiliary Audio Input Jack
USB Port (if equipped)
MyLink/Intellilink/Cue
Bluetooth® (If equipped)
Applications (if equipped)
Steering Wheel Controls (If equipped)
Speed Controlled Volume (SCV) (If equipped)

Fig 1: Radio/Audio System Block Diagram

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
UF7	RADIO: AM/FM STEREO, SEEK/SCAN, ETR, CLOCK DSP, MP3/WMA, USB, AUX/IN, WIRELESS INTERFACE
UH7	RADIO: AM/FM STEREO, SEEK/SCAN, CD, ETR, CLOCK DSP, MP3/WMA, USB, AUX/IN, WIRELESS INTERFACE
UE1	COMMUNICATION SYSTEM: VEHICLE, ONSTAR
UF7	RADIO: AM/FM STEREO, SEEK/SCAN, ETR, CLOCK DSP, MP3/WMA, USB, AUX/IN, WIRELESS INTERFACE
UH7	RADIO: AM/FM STEREO, SEEK/SCAN, CD, ETR, CLOCK DSP, MP3/WMA, USB, AUX/IN, WIRELESS INTERFACE
B24	B24 Cellular Phone Microphone
T4G	T4G Cellular Phone, Navigation, and Digital Radio Antenna
T4M	T4M Radio Antenna
A11	A11 Radio
K73	K73 Telematics Communication Interface Control Module
X83	X83 Auxiliary Audio Input
X84	X84 Data Link Connector