i cured mine by doing just this.
Replaced radiator, fan clutch, water pump, thermostat, and hoses.
Then the way i bled the system is make sure the front of the truck is higher than the rear. fill the radiator to the top, make sure heat is on full blast with the setting on defrost. Then when the thermostat opens add colant accordingly, and now my heats to hot, i always have it more towards the colder