Battery Drain Issue

[Geoff]

Hey guys battery has been dying overnight. Check the amp draw and it reads .03 key off on the 10 amp

scale. I disconnected the alternator and starter.... no change. I started pulling fuses. To get to 80ma I had

to pull the 50a lighting fuse, 40a ignition A fuse, and the 50a ignition B fuse. And finally to get to 41ma I

pulled the 20a ecm B fuse. I don't even know where to start with all the fuses I had to pull to get here.

Any ideas?

 

[Geoff]

I also have a viper alarm that i need to figure out how to disconnect. I don't have a head deck (tablet deck) and the stereo amplifiers tested fine. No other aftermarket stuff that i can think of.

 

[chevync]

If you have a stock headunit pull the fuse and see if that helps.

 

[Geoff]

I removed the head unit. I'm using a tablet for a head unit. I unhooked the stereo amps and that wasn't it.

I did some more testing...the alternator now seems to be pulling 60ma on its own. The ecm b fuse is pulling

50ma. The lighting fuse, ignition A, and ignition B individually are pulling more than the 200ma

max on my meter. Could a bad ground be a cause?

 

[Geoff]

The ignition B circuit seems the be the worst offender. I'm going to start with that.