truck wont warm up

[Mr_Rich]

Originally Posted by hillbillyrider

the heater hose from the water pump goes to the left hookup on the heater core. the heater hose that runs to the rear of the intake is hooked to the right

Looks like you have the hoses set up like a 60's to 70's heater hose set-up, but these systems don't work that way anymore. You've got two "pressure" connections and no return. The connection on top of the water pump should be plugged and routed to the fitting under the radiator cap. That's your return line; from the firewall to the radiator. Have you blasted out your heater core?