Mechanics

HOW TO FIND PARASITIC VOLTAGE LEAK AT BATT FUSE ON

2000 GMC Safari

Have a parasitic voltage leak at batt fuse on 2000 Safari. Can not find wiring info to know how to track the issue down.
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Granny35658
January 3, 2012.




So the fuse is labeled batt?


Saturntech9
Jan 3, 2012.
According to the owners manual it is called "batt fuse" It is under the hood in the bank of fuses located toward the rear of the engine compartment.


Tiny
Granny35658
Jan 3, 2012.
So when you pull that fuse the excessive draw goes away?


Saturntech9
Jan 3, 2012.
Yes


Tiny
Granny35658
Jan 3, 2012.
I have checked all the fuses under the dash and under the hood and this is the only one that the excessive draw changes on. I just can't find anything to show me how to trace it to the source of the leak.


Tiny
Granny35658
Jan 3, 2012.
That circuit feeds the inside fuse box also thats a big feed I posted some info on what it feeds. Also what is the draw your reading?


Saturntech9
Jan 3, 2012.
The reading is.72 amp on that fuse


Tiny
Granny35658
Jan 3, 2012.
So is your battery just going dead while sitting over night?


Saturntech9
Jan 3, 2012.
Yes sometimes before overnight. I.E. I park it at work at 9AM - If I don't start it by 3PM it will not start at 7PM. Have checked voltage on charger and if not charged overnight it loses at least 20 percent of charge


Tiny
Granny35658
Jan 3, 2012.
I have even seen window switches cause parastic draw before so sometimes you really have to check everything.
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Saturntech9
Jan 3, 2012.

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