Aveo 2007 heater core cleaning

I need to clean my aveo 2007 heater core. I ask if I need to remove the dashboard to remove the heater core or not.
Thanks

I ask it should be the dashboard taken out to remove the heater core?

Yes, the complete dash has to come out, not to mention the AC system has to be opened up and lines removed. It’s a mess of a job to do.