2007 tahoe. intermittent battery drain due to abs c/u

[jutt79]

Hello I have a odd situation. My wife went out 2 days ago and truck would not start. Battery was dead,she got a jump And I came and picked it up and took it to work. Battery was no good replaced And then checked for a draw. and it had a big one 4.5 amp ignition off draw. I found draw from abs c/u I pulled fuse And it dropped to 0.02 amps. Vehicle does not have any recalls due per dealer. My question is should I replace the abs unit and if I do does it have to be programmed thru the dealer.
Thanks

 

[samotahoe]

i would trace a few wires first to be 100% sure. that doesnt really sound right. but if it did come down to replacing it, you could swap it out and i dont think it would need a reflash off the top of my head