Question about 2000 GMC Sonoma Extended Cab
Not all the time, but sometimes during night driving the volt gauge will twitch and jump causing the headlights to dim. This only happens at night, and is the worst under 2500 rpm. I've read that it may be the ambient light sensor. Alternator seems fine and wire connections good. Any ideas?? Thanks.
I would still have the alternator chk. sounds to me that the internal regulator or a diod is going bad.
Posted on Mar 04, 2009
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Posted on Jan 02, 2017
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