Yes, GLC, I did run the diagnostics and found that everything checked out OK, so it must be the blend door. I'm building up the courage to go ahead and pull the dash and do it right. I'm afraid of the cutting and all with heater treater. The weather here has been warm lately, but I'm sure we will be getting cold weather again soon, and I'll have no other option.
Thanks, all, for the help
Will Walker (WOW)