Hope this is the right section to post. Installed a 4piston GT Brembo kit (front and rear). Been trying to bleed the system but seems like no pressure is getting to the rear brakes. My buddy just left attempted to do a Tech2 brake bleed but still brakes feel mushy and no pressure on rear brakes. Any ideas or advice? Thanks

BTW veh is 2007 trailblazer SS, 2wd with ABS.

 

Figured out the problem. Brakes work great now.

 

What was the problem?

 

I'm not sure. We decided to manually bleed the lines going to the master cylinder. There was some air caught in between there and I guess the ABS. How it happened were still trying to figure out. But glad we figured it out. They work amazing.