2002 pontiac grand prix climate control unit

[thecrow1986]

for some reason my passenger side of the car only works on ac and the driver only works on heat. to get it to change i have to play with the temp selectors then it changes over. is the heater controll unit going bad?

[richtazz]

it could be the heater control unit or the actuators themselves. The actuators are a higher probablility, but either could cause your symptoms.

[rkvons]

Originally Posted by thecrow1986

for some reason my passenger side of the car only works on ac and the driver only works on heat. to get it to change i have to play with the temp selectors then it changes over. is the heater controll unit going bad?

I would first try unplugging the fuse that powers all that stuff and then plugging it back in. The actuators get out of whack and this resets them.