Multiple parasitic draws

[zachdacoo]

I am at wits end. I have multiple parasitic draws its a 4 amp draw. The fuses abs 60 amp 50 amp rap#1 the atc the tbc radio and ecmb are all pulling 4 amp draw pull one nothing happens pull them all drops to zero. But you plug just 1 back in and straight to 4 amps. I have bcm unhooked all fuses in cab pulled( did nothing) and radio un plugged. When I unplug the abs module that fuse no longer makes a draw so I'm assuming that means new abs module. But it doesn't help any of the other draws

 

[strutaeng]

Ok, so you know the EBCM is one of the culprits. I actually didn't know those caused parasitic battery drains...they usually just fail altogether.

On your rap#1 draw, find a wiring diagram and see if there's anything else on that circuit that can be causing this. Check out website charm.li for free wiring diagrams.

You could try an infrared camera with the vehicle completely outside in the cold to see where the heat (draw) is occurring. I think they now even have infrared camera apps for your phone?

 

[Fless]

What make, model, year, and trim level? What's an ecmb? MBEC?

 

[zachdacoo]

Its a 2001 chevy suburban 1500 ls 5.3 4x4 and it's ecmb is one of the fuses that's causing a draw

 

[zachdacoo]

 

[zachdacoo]

Each fuse marked caused the draw i took all the fuses out of the truck unplugged bcm radio and latched all doors any one of the maked fuses cause it to 4 amp draw except the ecmb fuse and radio fuse which are 3 amp draws