DOUBLED25 Could you please use this link to ask this as a new question?
https://www.2carpros.com/questions/new
Please include your vehicle information and if you have the manual heater controls (turn a dial for temp) or the automatic (set a desired temp and it does the rest) system.
In both cases the temperature control actuator is between the firewall and heater core so the dash has to be removed the cooling system drained and the A/C recovered then the HVAC case removed to get to it.
Tuesday, February 5th, 2019 AT 5:21 AM