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Old 01-15-2010, 10:55 AM
Join Date: Dec 2009
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tmay2 is on a distinguished road
Default Draining Battery and TBC?

Does anyone have a circuit diagram of the TBC? My battery is draining and I have tracked it back to the TBC fuse [250mA+] constant drain. Not sure where to go from here.

2000 Blazer...

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Old 01-15-2010, 09:52 PM
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Join Date: Apr 2006
Posts: 467
RonJon is an unknown quantity at this point

I can tell you TBC fuse is one of the power inputs for the BCM and also powers your remote door lock receiver and multifunction switch (flash to pass) if that's any help. The first two of the three will be constant draws.
2000LT Blazer 4x4
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