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Re: '04 Yukon XL Denali - Body Control Module Experts?
Glad to hear your power draw is fixed.
But don't be surprised to see the charging voltage go up and down. It's normal believe it or not.
Our recently purchased 06 Yukon began showing low voltage while driving at highway speeds. Down and up. It always started just fine. Since my wife is on the highway every weekend I want to do my best to make sure she don't get stranded out there. My first instinct was to replace the alternator. But before I did I did a little search online into charging system problems and found by OE design this alternator fluctuates charging voltage " as needed " as another means of reducing power draw on the engine and increase mpg. This is verified by some GM bulletins.
I've been watching it close and it stays fully charged. Wife's happy. I'm happy.
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Boog
69 Chevy stepside, 358/T350, 4.11 posi, 4.5/4 drop, rallys, poboy driver
primer is finer
91 Chevy sportside, Tahoe, Yukon & GMC Crewcab All GM..'nuff said.
I stand for the flag and kneel at the cross
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