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Denali2012
New User
Jan 29, 2024, 12:23 AM
Post #1 of 2
(2994 views)
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Electrical
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2012 GMC Sierra 1500 Denali; replaced the alternator and battery twice but dash gauge(volt meter) will show charge for a bit then a discharge until engine is shut off and restarted again, where or what is the drawdown? have over 2000 into this problem.
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Hammer Time
Ultimate Carjunky
/ Moderator
Jan 29, 2024, 4:45 AM
Post #2 of 2
(2973 views)
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I don't believe anything is drawing anything down. The charging rate on this vehicle is determined by the BCM and ECM and the system will turn on and off as needed.
This is probably normal operation but I would have the battery tested to be sure.
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(This post was edited by Hammer Time on Jan 29, 2024, 4:46 AM)
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