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2006 Chevy Tahoe Z71 5.3
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Discussion Starter · #1 ·
Started with increasing voltage so checked and was told needed a new alternator. Replaced it and the issue has gotten increasingly worse. It not only red lines but is maxed out. When this started and i turned off the vehicle the voltage guage would stay at roughly 12 now it goes from½ inch passed 19 back down to 19. Has anyone had similar issues? 2006 tahoe z71

Thanks in advance
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