No offense to your step dad intended . . .
Is there any chance your dad replaced the mode door actuator, instead of the blend door actuator . . . ?
I just looked on rockauto . . . and they look virtually identical
I asked you if the suction line was ICE cold . . . and you responded “yes it is all working”
Does that mean the suction line is indeed ICE cold . . . or are you just confirming that the ac compressor clutch is engaging, because I had also asked about that, among other things
The only sure fire way to know if you’ve got a full charge . . . in my opinion . . . is to recover, evacuate and recharge. That means recovering the refrigerant, pulling the required vacuum for, say 20 minutes, injecting oil and then charging the correct amount
I’m not sure what the shop did, but if they didn’t do what I mentioned, then I’d say we can’t be sure you have a correct charge of refrigerant
I’ve seen a lot of guys convinced the charge was correct until they did what I mentioned. They were often surprised when they monitored the ac service equipment and discovered that the refrigerant charge was more than 1 pound low . . . in spite of the fact they were initially convinced it was correct
I know somebody’s going to chime in . . . so I’ll head this off right now
I’m well aware that you could look at charts and correlate the ambient temperature, low- and high side refrigerant pressures and the temperatures from the panel registers on max lo and declare the charge level might be correct . . . but it’s not the same as knowing because you actually did a recover, evacuate and recharge
And as I said in my above paragraph, I’ve seen a few guys eat their earlier words, when they hooked up the machine and discovered that the charge was nowhere near correct, during the part where the machine tells you how much was recovered . . . 
