Reduced Volume - One or More 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. Adjust the radio balance and fade controls to each speaker. Do all of the speakers operate properly?	Go to TESTING FOR INTERMITTENT AND POOR CONNECTIONS	Go to Step 3
3	Remove the radio. Turn the ignition ON. Adjust volume level. Test the appropriate speaker output circuits of the radio for A/C voltage. Refer to CIRCUIT TESTING andWIRING REPAIRS . Did the A/C voltage fluctuate with the audio output?	Go to Step 4	Go to Step 8
4	Turn OFF the ignition. Disconnect the radio. Test the appropriate speaker output circuits 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 9	Go to Step 5
5	Inspect for poor connections at the harness connector of the radio. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS . Did you find and correct the condition?	Go to Step 9	Go to Step 6
6	Inspect for poor connections at the harness connector of the appropriate speaker. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS and CONNECTOR REPAIRS . Did you find and correct the condition?	Go to Step 9	Go to Step 7
7	Replace the speaker. Refer to Speaker Replacement Reference . Did you complete the replacement?	Go to Step 9	-
8	Replace the radio. Radio Replacement Did you complete the replacement?	Go to Step 9	__
9	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2