Which actuator controls what? There are 4 actuators (that I've found) in my 2002 Envoy. Question is, which one controls what? There are three on the drivers side and one on the passengers side?

SOURCE: removal of heater control switch on rh side of dashboard.

the panel just pops out it has clips holding it in, you might want to pull the side panel off just in case there is a 7mm screw holding it in but that should only be for the radio removal, i have a question for you, how did you replace that actuator and did that solve your problem, my car does the same thing and i already replaced the switch, and te climate control panel, thanks.

SOURCE: Drivers side cabin temp controll 2001 Chrystler T&C

I have a 1998 and had the same problem It ended up being the control itsel. I changed the control and it worked.

SOURCE: With AC on cold, Drivers air full hot & passenger side full Cold

that is a good possibilty, but before I pulled the trigger I would try this first. unhook the battery for 5 minutes, rehook it, now turn the key on, wait for 2 minutes, now start the truck and see if the doors now work. sometimes this works, its worth a try.

Testimonial: "Thank You, Temp. Cont. operates ok. A computer reboot on a truck works the same as on commerical aircraft system (reset system). hopefully no refault"

SOURCE: Air conditioner blows hot air after 30 seconds on

I have had this problem. I am not a mechanic...so to correct the issue temporarily, I simply turn off the car and restart. This has worked everytime for me. In extreme cases, I think you can also remove the AC fuse and start the car, which will also reset the computer. I also think that by taking the climate control off the "AUTO" setting has worked in the past.

SOURCE: dual climat control, drivers side two vents hot

Start with making sure it is full of freon. Are both lines coming from and to the evaporator cold?