Greetings everyone!

I have a 2002 Chevrolet 1500 2wd. The ABS light came on when I started the vehicle after about a week of it sitting in the drive way. I took it to several people including the dealer and no one was able to read the ECBM or any codes at all from the ABS system. All fuses have been checked and are good.

I found an ECBM at the junk yard at a deal and installed it last night. The ABS light was still on. I took it this morning to get it scanned again and maybe clear the code. Still... they can not read any code. At this point I'm thinking its a wiring issue?

Can anyone please give me a suggestion where to start?! Is there anything or any place in particular that I should check?

Thanks!
-Ryan