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Truck eating alternators

Tiny
ARTIMP
  • MEMBER
  • 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
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Thursday, February 24th, 2011 AT 3:19 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 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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