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1997 GMC Jimmy battery

Tiny
DREW1985
  • MEMBER
  • 1997 GMC JIMMY
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 127,000 MILES
My car battery has not stayed charged I went to auto zone and they tested it and said it was good. Checked my dome lights, my alarm has never gave me any problems I didnt even turn on my alarm and my battery is still dead. My power door locks and power seats dont work. Please help me?
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Wednesday, May 21st, 2008 AT 12:02 PM

2 Replies

Tiny
D29
  • MEMBER
  • 3 POSTS
I've had the same problem for 3 years now and my mechanic still can't find anything wrong. Have you ever figured out the problem?
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Wednesday, November 26th, 2008 AT 1:33 PM
Tiny
SWILLIAMS
  • MECHANIC
  • 597 POSTS
Could be a bad diode in the alternator.

To test for current drain disconnect the negative side of the battery and connect an amp meter between the battery and the cable. Read what the meter says. Anything over 1/2 amp draw after 20 minutes means you have a current leak. Then you just start pulling fuses till the draw stops. Then you ferret out the problem by using a good wiring diagram.
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Thursday, November 27th, 2008 AT 6:13 PM

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