I have coolant leaking relatively badly from my EXT. I know it's related to the rear heater core because I had coolant dripping from the back right corner, but that leak has kind of gone away and now its leaking under the front passenger door, and in the cab. I don't know how it's getting in the cab but I noticed after my dune trip when the sand that was on the carpet absorbed a bunch of coolant. I pulled the passenger rubber floor mat and the carpet was soaking wet with coolant. It's somewhat spread around the first two rows of seating but the worst spot in the cab is the passenger footwell. I need to get this fixed soon so if anyone can tell me how to block off the flow of coolant in the engine bay before it goes past the firewall I would be super happy. I don't know if it's possible to remove the rear heat but keep the A/C, but that would be ideal for me. I saw someone on another thread mention it but he didn't know if it was possible either.