Step  | Action  | Values  | Yes  | No  | 
|---|---|---|---|---|
Schematic Reference: Radio/Audio System Schematics Connector End View Reference: Entertainment Connector End Views  | ||||
1  | Did you perform the Diagnostic System Check - Vehicle?  | --  | Go to Step 2  | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information  | 
2  | 
 Is the reception clear?  | --  | Go to Step 3  | Go to Step 5  | 
3  | Tune the radio to several other satellite channels. Is the reception clear?  | --  | Go to Step 4  | |
4  | Contact XM at 1-800-556-3600(GM Dealers Only) or 1-800-852-9696(Isuzu Dealers Only) to verify customer account status or possible network problems. Did you find and correct the condition?  | --  | Go to Step 14  | Go to Step 10  | 
5  | Contact XM at 1-800-556-3600(GM Dealers Only) or 1-800-852-9696(Isuzu Dealers Only) to verify possible network problems. Did you find and correct the condition?  | --  | Go to Step 14  | Go to Step 6  | 
6  | With a scan tool, observe the digital radio antenna in the digital radio receiver data list. Does the scan tool indicate that the digital radio antenna is within the specified range?  | 17-63 mA  | Go to Step 10  | Go to Step 7  | 
7  | 
 Does the voltage measure within the specified range?  | 4.5-5.5 V  | Go to Step 8  | Go to Step 10  | 
8  | Test the antenna cables for an open, short, or high resistance. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find the condition?  | --  | Go to Step 9  | Go to Step 11  | 
9  | Replace the antenna cable. Did you complete the replacement?  | --  | Go to Step 14  | --  | 
10  | Inspect for poor connections at the digital radio receiver. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?  | --  | Go to Step 14  | Go to Step 12  | 
11  | Inspect for poor connections at the digital radio antenna. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems. Did you find and correct the condition?  | --  | Go to Step 14  | Go to Step 13  | 
12  | Replace the digital radio receiver. Refer to Control Module References in Computer/Integrating Systems. Did you complete the replacement?  | --  | Go to Step 14  | --  | 
13  | Replace the digital radio antenna. Refer to Digital Radio Antenna Replacement . Did you complete the replacement?  | --  | Go to Step 14  | --  | 
14  | Operate the system in order to verify the repair. Did you correct the condition?  | --  | System OK  | Go to Step 2  |