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My 2005 Sierra unfortunately just joined this thread! Will the tech fix listed within this thread work on my 2005 as I see the fix is directed to 2004 and before? I've read a lot and viewed youtube on this topic. Replaced my battery within 6 months ago and alternator on 10/20/20 when diodes fried in alternator and replaced it with AC Delco ReMan # 334-2747A alternator right before setting the clocks back so I didn't notice the flickering/pulsing until a few weeks ago driving during darkness. A Facebook comment to a post said that there are known issues with the integrated voltage regulator itself inside the alternator that my eventually cause it to crap out. Please, I'm looking for a superior voltage regulator replacement of a different manufacture's make that doesn't use the same crap as Delco. Please, I appreciate any regulator replacements to use? Thank you very much and good luck!
 
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