Well I talked to a couple of guys I know , and all they said you need a new module. If what I did unseized the pump, and all is good ,I am fine with that. One shop here in Canada wants $4000 plus for the whole unit. That is total crap.
Thought I'd share my experience. 2000 C5 with active handling option (V code on EBCM). I was getting the "service abs" messages for the past few years every time I started the car. At first I was getting 1214 and 1243 codes intermittently. Brought it to a local corvette specialist (a few years ago) and they said it was the ABS pump not the EBCM (brain). I was going to finally bite the bullet and try to find the pump and started calling around. Mark at VettNuts told me to try freeing the pump by doing the following: Go to a gravel or dirt parking lot. Get into the DIC diagnostic menu to where the abs codes are and get ready to do a reset of the codes. Get the car going ( 10mph or so all you need). Hold down the reset button and smash the brake as soon as it beeps and the screen blanks. (i think I tried the 12v to the green wire a few years ago and it didn't work, maybe I didn't do it right ?) You have to hit the brake before the system fully runs its diagnostics (after the reset) and senses the stalled motor to fire the ABS. Took me a few times to get the timing down. There is a 2 -3 second or so lag between pressing the reset button and the code reset. He said he had success many times with this method but sometimes it takes 4 or 5 times. So off I go, find a gravel/dirt lot and proceed to do this about a dozen times. No good, But I notice now the only code I get is the 1214 code. After looking this up again I find a post that says to check the 30A fuse in the fuse box next to the battery. Sure enough the fuse is blown. Replace fuse and go back to the lot. First run I now see the ABS activated come on and no code initially but then abs lights come on and I get a 1243 code (after about 5 seconds). Do it again, same result. Do it the 3rd time and no code and no lights and no service abs message ! Now just mashing the brakes to activate the abs 2 or three more times then I get the 1243 code again ;-(. Back to the reset procedure. First time, abs fires, no codes. Back to just forcing ABS a dozen more times, no codes. Keeping my fingers crossed. It's now been a few days with no codes at startup.
So that is an alternative to the 12v to the green wire thing, I also heard you can jack the rear wheels off the ground and get them spinning to exercise the ABS but not exactly sure of that process. I assume you will need someone in the car to do the code reset thing ??? And another option I believe is to use the TECH2 (if you have one or know someone with one). It has a feature to manually exercise the ABS pump / system. (not sure if the Tech2 clones have it as well). Hope this helps someone... Fingers till crossed !!!!