It's almost going on a month since my blazer has been on the road and I have yet to drive it. Something has been draining the power in my 01 blazer killing the battery. We have narrowed it down to the Body Control Module under the dash. When the brown plug is disconnected the draw stops. There are 19 wires connected to the brown plug so I am looking for a diagram or something telling me where it leads to. Please Help.

 

I found this a wile back on this forum you may want to see it

https://blazerforum.com/forum/2nd-ge...elp-bcm-53170/

also you may want to look here and see other problems that people have had

bcm - Blazer Forum - Chevy Blazer Forums - Threads Tagged with bcm

 

Thanks so much for the reply! I was beginning to think I was going to have to figure this out on my own

 

Someone somewhere made a global schematic of the BCM, I'm sure.

Problem is I sure havent ever seen one. Alldata is clear as mud on it.

Here's a layout of body relay block. You might localize the problem by pulling these one at a time

Also the power distribution to BCM Try pulling these {C-1} fuses one at a time.

Why do I suspect Cruise? It's happened to me.. killed the power to engine altogether. That was in a Ford but you never know