I know this is a common problem and have been reading the posts. I really do not want to do the heater core. I have a fair heat on the passenger side and poor on the driver, Blend door appears to move correctly, flushed the heater core over the summer.

I was wondering if replacing the water pump would increase the coolant flow and help with heat. Open to suggestions. Thanks!
2015 Jeep Unlimited 3.6L

 

Welcome to the forum. I have seen multiple youtube videos on this subject.. recall several had to flush / reverse flush multiple times. Take a look on youtube.

 

late to this thread, but I would argue that replacing the water pump in hopes of getting better pressures is a pipe dream. I really think it's several flushes back and forth as Jay suggests, or just replace it.