I'm having a no heat issue with my truck where I have no heat when I have it on truck warms up to operating temp but no heat comes out the vents put a new blend door on no change the blend door is working any input on this from anyone who has dealt with it would be great.

 

With the truck warmed up check to see if the heater hoses are warm. The input one should be slightly warmer than the output. If the output is cold you have a clogged heater core.

 

Both the heater hoses are hot I did notice the coolant level is about an inch and a half low in the reservoir so I will get the proper coolant which I guess it calls for the orange coolant and there is orange coolant in it so I will try that I guess

 

If it's only an inch and a half, you can add water.

 

I now believe that a clogged heater core is my issue so nothing I can do for now, changed the blend door, put it new thermostat in made sure coolant is full so a clogged core seems correct hopefully not a fully bad core.

 

If the heater core was indeed clogged, both heater hoses would not be HOT.

Re-evaluate your observations to see if you've gotten off track.