Question about 1998 GMC Sierra
The regulator in the alternator is most likely the problem.
The alternator could be charging.......just not correctly....... the flickering headlights are showing a varying voltage.......and with the charging light flickering too..........99% chance you need a complete rebuilt alternator.
Posted on Oct 05, 2009
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Check your alt. belt might be loose,or if serpentine ,might be slipping or tensioner worn.
Posted on Nov 20, 2013
That's possible although sometimes its only a wire has shaken lose
Posted on Dec 12, 2011
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Posted on Jan 02, 2017
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