So I bought a truck sight unseen. Had abs, brake, traction control and check engine lights on. Had a cooling issue. Fixed everything and ended up replacing the abs module.
​​​​​​ABS module light is now fixed but I still have 3 codes preventing me from doing an abs bleed.

C0240
C0292
C0228

Was told it's a tac module or the wiring for it. I checked all connections and none are corroded or bad. I was wondering if anyone had a pin out or something so I can check to see if I have working wire harnesses?

I do have a bi directional scanner.

 

alldatadiy.com has all the diagrams online. It's the shop manual, I subscribe to it for all the vehicles in my ''fleet''.

 

I just looked and the site had nothing for 2005 suburbans but thanks for the idea

 

Sure they have them, under chevy trucks. 2wd or 4wd with engine choices.