It would see that I am not the only one in the forum, who has had issues with their ABS module. I ordered a new one, fomr GM but it showed up and was faulty.
Aparently GM has had quite a few modules show up that didn't work and they are since told their dealers not to install anymore until they can find out what the problem is.
What this means is your Anti Lock Braking system will not function properly. Your main brakes will still work, but they won't be anti-lock.
Fortunately there is a place to send your module out to have it rebuilt. It's called Module Master. Typical turn around is 2 days and it will come with a 5 year warranty. Mine will cost me $153, to be rebuilt. Once I get it back I will take my replacement one and have it done, so I will have a back up.
Our ABS module is the "Kelsey Hayes 325". If you call them say hello to Janey, who typically answers the calls. She loves these trucks!
All work performed in the USA
ModuleMaster
2006 South Main
Moscow, ID 83843-8913
Local: 208-892-0764
Toll free: 888-892-0764
Hours: 8am-5pm M-F (PST)
ModuleMaster