Digital Radio Poor or No Reception

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Values	Yes	No
1	Did you perform the Entertainment System Diagnostic System Check?	-	Go to Step 2	Go to Diagnostic System Check - Entertainment System
2	Make sure the vehicle is outside in an area with an unobstructed view of the southern sky. Turn ON the ignition, with the engine OFF. Turn ON the radio. Tune the radio to satellite channel 1. 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 Audio System Troubleshooting Hints	Go to Step 4
4	Contact XM at 1-800-556-3600 to verify customer account status or possible network problems. Did you find and correct the condition?	-	Go to Step 16	Go to Step 12
5	Contact XM at 1-800-556-3600 to verify possible network problems. Did you find and correct the condition?	-	Go to Step 16	Go to Step 6
6	Does the digital radio receiver have 2 antenna cables?	-	Go to Step 7	Go to Step 8
7	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?	1200-1800 mV or 42-118 mA	Go to Step 12	Go to Step 9
8	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 12	Go to Step 9
9	Disconnect the antenna cables from the digital radio receiver. Measure the voltage from the center conductor of the inboard antenna connector on the digital radio receiver to one of the case screws. Does the voltage measure within the specified range?	4.5-5.5 V	Go to Step 10	Go to Step 12
10	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 11	Go to Step 13
11	Replace the antenna cable. Did you complete the replacement?	-	Go to Step 16	-
12	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 16	Go to Step 14
13	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 16	Go to Step 15
14	IMPORTANT: Always perform the setup procedure for the digital radio receiver. Refer to Digital Radio Receiver Setup Replace the digital radio receiver. Refer to Receiver Replacement - Digital Radio .Did you complete the replacement?	-	Go to Step 16	-
15	Replace the digital radio antenna. Refer to Antenna Replacement - Digital Radio . Did you complete the replacement?	-	Go to Step 16	-
16	Operate the system in order to verify the repair. Did you correct the condition?	-	System OK	Go to Step 2