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I have read some post about heater cores. I got my hoses off and flushed thru the return and supply side of the heater core. No issues and I didnt get any scale out. For some reason I cant get heat in the truck. I put a new blend door actuator in and a new vaccum motor. Anything else I should check?
Yes I do. I pulled the hose off then put it back on. I watched the valve open too. While part of the hose was off, I ran the truck till the valve opend and saw flow. Maybe a air flow door is stuck? Im draining the whole aystem and putting in new fluid this week.
