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 10:00 AM
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FIXITMR
  • ✓Experienced Mechanic
  • 9,990 POSTS
could be bad gauge.
Dec 29, 2011 at 10:04 AM
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