Question about 2002 GMC Sierra 1500

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Alternator feeding back through speakers

From boats82373, You mentioned a bad ground. Would that be in the alternator, the radio, or elsewhere? Both the alternator and radio work fine now. Is it possible for the speaker wires to be grounded against the inside of the door? I ask this because the noise is only coming from the right side front speakers.
Any more info you can give me would be greatly appreciated.
Thanks

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  • Bruce Ekstrand May 11, 2010

    I do not know your original problem, but a grounded speaker wire would give this symptom. If the radio seems to be getting overly warm/hot, a grounded wire is almost a certainty.

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It could either be the ground or the speaker is about to go. Play the radio with the car off and see what you hear. If you still hear the static then try tighting all the connection on the alternator. Even check your battery terminals make sure cabaes are tight. Static is hard to pin point but its almost always just a loose connection somewhere. hope this helps

Posted on Sep 21, 2009

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