My 2001 Blazer will not start. New battery when running over 14 volts charging. But seems top drain the battery. if i disconnect the battery after use it is fine. I had a 94 Bravada did the same thing, the guy I purchased it from put a cut out switch right at the battery. But what a pain to op…

U need to find which circuit is drawing power when vehicle is shut off. Put an ammeter on battery and start pulling fuses.isolate which circuit/fuse causes amp draw to stop

Here is a start [image] How to Stop Car Battery Drains There are plenty of energy-robbing devices on your car that are supposed to go to sleep when it's parked, and sometimes, not all of them go to sleep. Here's how to give them a tranquilizer.

If you’ve added any non-OEM electronics to the car, like audio or alarms, disconnecting them and seeing if it solves the problem is probably what I’d do first. Someone here mentioned an idea a while ago, a sort of short-cut method, to find which circuit these current draws are in, that didn’t req…

I have heard many have had this problem so I wonder if it is coherent to this type vehicle?

I purchased a a laser-guided non-contact temperature probe and will check it first chance i get.

Blazer Battery goes dead

Maintenance/Repairs

db4690 January 31, 2013, 5:11am 6

@grego2 there is no one answer for every vehicle.

Here are some examples of the sources of parasitic draw that I’ve encountered over the years.

body control module
radio
instrument cluster
ac pushbutton switch assembly
etc.

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Blazer Battery goes dead

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