95 Lumina apv heater/fan question
 

I have a 95 Lumina van that had some issues a few months ago and ever since I got it fixed the fans for radiator run full time and the heater only blows through the floor.my question is are those2 things controlled by the computer because a coworker told me I might need to reset it because it still not running100 percent and find it odd that the fans and heater acted up only after it broke down and original problem was ignition module,any help would be greatly appreciated