Hi guys i have a 98 chevy Silverado that blew a rear brake line and it drained the master cylinder, I repaired the busted line and can't get it bleed properly. I am not getting brake fluid to rear end at either wheel. also when i start the truck the pedal goes to the floor and the brake light comes on.

 

Likely still have air in the system. I'd back-flush it up to the M/C with a tool made for that.

Most auto parts stores can rent you one.

It's possible the M/C is bad, but I doubt it.