truck eating alternators

2001 GMC YUKON
200,000 MILES • 6 CYL • 4WD • AUTOMATIC
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ARTIMP
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  • 1 POST
2001 GMC Yukon SL eating alternators. voltage drops through floor and everything shuts down while driving. We keep putting in new batteries and alternator and then replace again. We know we also have electrical issue because warning lights some on regularly for things that are fine. PLEASE PLEASE HELP
Feb 24, 2011 at 3:19 PM
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JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
Are you using oem alternators? If you have a digital multimeter, you can do some tests on your charging system. Check for trouble codes, there are trouble codes for the charging system. Some of the national brand autostores used to check codes for free.
Feb 24, 2011 at 7:43 PM
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