well i bypassed my heater core this weekend got home from work 100mile drive and the truck is leaking water behind the block scares me then i see its from the trans manifold cooler/warmer mounted on the block ok my question is ive already bypassed the trans lines that connect on it and caped them off the only thing running itno it is the rad lines that go into its been like that for roughly 80,000 miles well now it leaks coolant right on the manifold like it cracked there im thinking to just bypass the hole manifold is that manifold just bolted on the block and if i bypass the radiator lines and dont cap them tonight it shouldnt leak right ?? im thinking it might have cracked because of pressure or something so i pulled my thermostat out see if it runs better tommorow ???im doing this now any ????

 

Sounds like something in the coolant or cooling system is destroying your truck from the inside out.