Can't get temp to change from heat to cold or if hot, switch wont't change to cool

You may have a broken blend door. These vehicles have a plastic door and it is actuated with a small motor. these doors break where they attach to the motor. If this is indeed the case you will have to have the complete heater/AC plenum chamber replaced, close to $1000.00 for this repair if the parts are still available. Good luck

I have the same issue. The problem is the actuater that controls the air flow from hot to cold and back. It is probably sticking. The only way mine changes temps is if i turn the blower on the highest setting for about 5 seconds and you will hear it pop.