what causes my volt meter in the truck to go over maximum voltage

2003 GMC SIERRA
122,000 MILES
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MILNE
  • MEMBER
  • 5 POSTS
replaced alternater it shows 14.6 volts at the battery. checksok.
Dec 29, 2011 at 6:00 PM
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FIXITMR
  • ✓ASE Certified Mechanic
  • 9,990 POSTS
  • ASE Certified Mechanic
could be bad gauge.
Dec 29, 2011 at 6:04 PM
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