Chevy cruze i just felt my radiator fan is not running on low and medium only at high speed, but fan is working fine with Ac on.

I already checked the fan capacitor it running well with different speeds,
I just changed the head gasket because of heating issues as well as thermostat. I dont know am really worried about it. Also i felt sometime fan also not running but when i turn off the car then turn again its ruining for sometime at high soeed then off.🥲🥲🥲🥲