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Old 09-22-2009, 11:47 AM
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yukon6inchlift yukon6inchlift is offline
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Re: sudden alternator whine - stock 2003 yukon

its all connected. some plugs have resistors to eliminate that whine. i would change them, also the wires. they seem to break at the boots when removing them, yours having that many miles i would think they are stuck on pretty good.

u could have the alt tested to see if its putting out to much juice, but i doubt thats it. the noise u hear is prob thru the ign. could be a coil pack too.

let us know what u find out
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