Radio Display Inoperative, No Sound from Speakers

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Radio/Audio System Schematics
1	Did you review the Radio/Audio System Description and Operation and perform the necessary inspections?	Go to Step 2	Go to Radio/Audio System Description and Operation
2	Turn ON the ignition, with the engine OFF. Turn ON the radio. Does the radio operate properly?	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	Turn OFF the ignition. Disconnect the radio. Turn ON the ignition, with the engine OFF. Test the accessory voltage circuit, also known as the RAP fuse supply voltage circuits, of the radio for an open. Refer to CIRCUIT TESTING andWIRING REPAIRS . Did you find and correct the condition?	Go to Step 8	Go to Step 4
4	Test the battery positive voltage circuits of the radio for a short to ground or an open. Refer to CIRCUIT TESTING andWIRING REPAIRS . Did you find and correct the condition?	Go to Step 8	Go to Step 5
5	Test the ground circuit of the radio for high resistance or an open. Refer to CIRCUIT TESTING andWIRING REPAIRS . Did you find and correct the condition?	Go to Step 8	Go to Step 6
6	Inspect for poor connections at the harness connector of the radio. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 8	Go to Step 7
7	Replace the radio. Refer to Radio Replacement . Did you complete the replacement?	Go to Step 8	-
8	Operate the system in order to verify the repair. Did you complete the repair?	System OK	Go to Step 2