No ABS or Brake Light on Dash

[stevedenali]

Hi guys, I am new to this so please excuse any mistakes I make and/or any repetition, just some help would be great. So...I have a 2005 Sierra 1500 Denali. MY uncle bought it brand new and gave it to me as a gift at 250k miles, truck still runs strong! He maintained it very well but close to the time he gave it to me, the gauge cluster motors went bad and he had a new unit put in at the dealer. While there, he declined repair to the ABS system, but he swears up and down there was never an ABS or brake warning light before or after the cluster replacement. I found out the truck's ABS wasn't working in the rain one day so I went on the way to fixing it. I found that the pump motor was seized, so I replaced the motor/modulator valve with a new AC Delco one. From there, I had my control module rebuilt. The main issue with that was the transistor inside blew out because the old seized motor was drawing too much current. Now the ABS works great, no codes, no nothing, but there is still a remaining issue. The same guy who redid my module checked my cluster outside of the truck. The ABS and Brake lights work outside the truck(on his test bench), but not in the truck(plugged into the truck). Not when I turn the key or even if I command all cluster lights on with my snap-on scanner. All the lights but those two come on. But if I leave the e-brake on, I get the constant warning chime, and if I unplug the ABS, I get a "Service Brake System" message in the cluster odometer screen. But in the truck, those two lights refuse to come on. No wires are missing or cut from the connector and obviously no pins on the cluster are missing. I just have accidentally left the e-brake on before not having that light working, and also, I will not be able to know if I have an ABS issue ever without scanning it. Sorry this is so long but I felt the back-story was necessary. Thanks so much for any help guys. Also, the ground on the body mount frame bracket is good and clean.  I posted this on the Silverado/Sierra forum but figured I would here too.