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Old 09-11-2018, 05:38 AM   #1
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2017 25' Flying Cloud
Laurel Hill , Florida
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2014 GMC Sierra Aternator Question

My 2014 GMC SIERRA when not pulling my travel trailer alternator shows around 14 but when I am pulling my trailer it drops to between 9 and 12. Sometimes when this happens. my truck is hard to start. Is the problem with the truck or the seven way cable from the trailer?
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Old 09-11-2018, 06:24 AM   #2
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First thing I would do is get the alternator load tested.
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