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Help with a 2007 Buick Lucerne V8 Electrical noise problem.
When I use turn signals hear a high pitch whine, Also hear the same when using radio or backup assist. Will occasionally hear a pop when turning radio on then goes to the whine noise. Any suggestions? Thank You . It does change pitch when the engine increases or decrease in rpms. Any help you could provide would be greatly appreciated. Thanks.
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Answers
- Before swapping anything I'd recommend comparison of alternator output with normal - maybe it is a particularly noisy/choppy "12" volts - that could be detectable by scope/meters that would be part of what the free-charging-system-check at most car battery shops.
Thank You for your advice. It very well could be from the alt.