silverb5

Hi new here but figured this is the best place to try to solve my issue.
Those who I have talked to mechanic friends, think it is a coincidence, but I thought worth mentioning the rad.
My rad started to leak about a week ago. I used some stop leak and it solved the issue. Then two days later this started.

I have tried to read and search first but I cannot seem to find a solution to my unique problem.
I have blasting hot heat on the passenger side , just cool air on the drivers .
Switch to A/c works great on the driver side just cool air on the passenger side. I do not have dual climate control obvioulsy
I have taken the glove box out and both servos move and work just fine not dirty or junked up seem to work as intended.

Is there also a blend door/mixing valve under the hood ? A friend seems to think so but I cannot find it or any mention of it on this site
Is there a way to flush the heater core possibly some of the stop leak got in there. Again mechanic friends say the heater core is fine if I get hot air on the passenger side but figure its worth trying possibly ?

silverb5

I have since figured out how to do the diagnostic check comes back error code 41 , air mix door servo

Does anyone know the location of this air mix door servo , it is not under the glove box and not under the drivers side dash ??