2006 GMC Envoy check engine lite stays on, and voltage flut

2006 GMC ENVOY
82,000 MILES • 6 CYL • 4WD • AUTOMATIC
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KOHO5
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  • 1 POST
Check engine lite stays on and voltage flutuates from 12 volts to 14 volts why? Dealer states voltage is normal for this type of vehicle.
Aug 6, 2009 at 4:25 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
It shouldn't be flutuating when no load being applied-Get the charging system checked out
Aug 6, 2009 at 4:45 PM
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