I’ve just replaced front calipers rotors pads and bled the brakes atleast 20 times I’m talking primed a gallon through this truck I have done the vacuum trick forward to rear incase the proportioning valve was stuck I’ve done a new master cylinder aswell and vacuum truck again with bleeding the system. I’m at a loss no brake lights on no abs light is on. Any suggestions would be appreciated.

 

Brake pedals solid when off as soon as I start the truck it’s gone to the floor.