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1999 Chevy Blazer Battery draw

Tiny
NORAKSEARCHING
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 130,000 MILES
My Blazer draws out the battery to dead when it is sitting. The battery is new, as is the catalytic converter, the actuator, the transmission module.

We had it tested and the diagnostic showed nothing.

The starter and alternator are not the problem.

Neither is the ABS module.

How do we find out what is drawing the power?

Already ran a diagnostic for $130.00 with no results.

Thank you.
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Monday, January 12th, 2009 AT 9:43 AM

1 Reply

Tiny
MIKE H R
  • MECHANIC
  • 3,094 POSTS
You can do it a couple of ways. If you have a amp reader you can see what the draw is at the battery and then check at each fuse what is drawing thwe voltage. There are a few things that do use voltage all the time. If you don't have a amp reader then What I would do is check the fuses and do it by elementation taking out one fuse at a time. If you have something like auto zone around you, you can take it to them and see how much the draw is.
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Thursday, January 15th, 2009 AT 8:07 PM

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