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markbu ... 2/9/2013
2010 GMC Acadia SLT 2 Cyl 0.3L - Engine
What would cause my volt gauge to run 15 plus.
1 Answer
  • Jimm
    Jimm 2/9/2013
    It depends - on the electrical load; types of accessories operating - such as high beam headlamps, air-conditioner, heater / blower fan, etc.
    Typically, the alternator and built-in voltage regulator will recharge the battery and supply all the current and voltage needs for the electrical system.
    You may have the electrical system / alternator output tested - for free - at any local auto parts store.

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