Originally Posted by Hemi_05
I have a 2005 Jeep Grand Cherokee Hemi with 116,000 miles. The Heater Core started going bad the last 20,000 miles. They changed the unit 5 times and the hoses once.
This doesn't sound like a heater core issue, maybe there is something else causing the heater core to leak, perhaps too much pressure on the inlet side or a restriction on the outlet. I'd bet there is something plugged in the cooling system, or maybe when they installed the first replacement heater core they kinked a line somewhere.
I used to be a service manager and know things like this happen too often. Sure, they replaced a broken part, but never really fix the original problem.
Best of luck to you and your WK