I'm Chris, Thanks for allowing me to help you here on Just Answer.
While driving the vehicle with heat commanded on max hot. Are you getting any warm or heated air or hot air coming and going or is it only hot this one time first off and that it?
Yes. Only one time
I have not heard back from you, so I assume you are needing more assistance on this matter, you can still reply on this thread.
If this solved the concern and you want to close the question and give me credit for assisting then do this by just hitting accept or by replying and saying "I accept." Accepting does not lock you out from replying if needed later.
My goal is to have nothing but satisfied customers.
Thanks Hope to hear from you soon, Chris