TRUCK EATING ALTERNATORS

  • Tiny
  • artimp
  • 2001 GMC Yukon
  • 6 CYL
  • 4WD
  • automatic
  • 200,000 miles

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

Thursday, February 24th, 2011 AT 3:19 PM

1 Answer

  • Tiny
  • JDL
  • Expert
  • 16,290 posts

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.

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Thursday, February 24th, 2011 AT 7:43 PM

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